分 ⇒
分钟 fēnzhōng, [分鐘], minute
分 fēn/fèn, to divide/to separate/to distribute/to allocate/to distinguish (good and bad)/pa...
部分 bùfen, part/share/section/piece/CL:個|个[gè]
分手 fēnshǒu, to part company/to split up/to break up
十分 shífēn, very/completely/utterly/extremely/absolutely/hundred percent/to divide into ten ...
分子 fènzǐ/fēnzǐ, [份子], members of a class or group/political elements (such as intellectuals or extremi...
分析 fēnxī, to analyze/analysis/CL:個|个[gè]
大部分 dàbùfen, in large part/the greater part/the majority
分享 fēnxiǎng, to share (let others have some of sth good)
分开 fēnkāi, [分開], to separate/to part
过分 guòfèn, [過分], excessive/undue/overly
一分 得分 défēn, to score
充分 chōngfèn, ample/sufficient/adequate/full/fully/to the full
分离 fēnlí, [分離], to separate
分散 fēnsàn, to scatter/to disperse/to distribute
分裂 fēnliè, to split up/to divide/to break up/fission/schism
分别 fēnbié, [分別], to part or leave each other/to distinguish/difference/in different ways/differen...
成分 chéngfèn, composition/make-up/ingredient/element/component/one's social status/CL:個|个[gè]
分配 fēnpèi, to distribute/to assign/to allocate/to partition (a hard drive)
分心 fēnxīn, to distract
四分 美分 Měifēn, one cent (United States coin)
分成 fēnchéng, to divide (into)/to split a bonus/to break into/tenths/percentage allotment
分数 fēnshù, [分數], (exam) grade/mark/score/fraction
万分 wànfēn, [萬分], very much/extremely/one ten thousandth part
分辨 fēnbiàn, to distinguish/to differentiate/to resolve
一部分 yībùfen, portion/part of/subset
天分 tiānfèn, natural gift/talent
比分 bǐfēn, score
百分 bǎifēn, percent/percentage
分歧 fēnqí, divergent/difference (of opinion, position)/disagreement/bifurcation (math.)
百分之百 bǎifēnzhībǎi, a hundred percent/out and out/absolutely
四分之一 sìfēnzhīyī, one-quarter
分娩 fēnmiǎn, labor/parturition/delivery
分头 fēntóu, [分頭], separately/severally/parted hair
分类 fēnlèi, [分類], classification
区分 qūfēn, [區分], to differentiate/to draw a distinction/to divide into categories
分局 fēnjú, sub-bureau
分居 fēnjū, to separate (married couple)/to live apart (of husband and wife, family members)
分解 fēnjiě, to resolve/to decompose/to break down
三分 sānfēn, somewhat/to some degree
分发 fēnfā, [分發], to distribute/distribution/to assign (sb) to a job
分队 fēnduì, [分隊], military platoon or squad
时分 shífēn, [時分], time/period during the day/one of the 12 two-hour periods enumerated by the eart...
身无分文 shēnwúfēnwén, [身無分文], penniless (idiom)
三分之一 sānfēnzhīyī, one third
分泌 fēnmì, to secrete/secretion
分部 fēnbù, branch/subsection/to subdivide
平分 píngfēn, to divide evenly/to bisect (geometry)/deuce (tennis)/tied score
小分队 分明 fēnmíng, clear/distinct/evidently/clearly
分布 fēnbù, [分佈], to scatter/to distribute/to be distributed (over an area etc)/(statistical, geog...
五分 分量 fēnliàng/fènliang, (vector) component, quantity/weight/measure
身分 shēnfèn, variant of 身份/identity/status/capacity/dignity/position/rank
评分 píngfēn, [評分], to grade/to mark (student's work)/grade/score (of student's work)
分担 fēndān, [分擔], to share (a burden, a cost, a responsibility)
分为 fēnwéi, [分為], to divide sth into (parts)/to subdivide
分支 fēnzhī, branch (of company, river etc)/to branch/to diverge/to ramify/to subdivide
满分 mǎnfēn, [滿分], full marks
分道扬镳 fēndàoyángbiāo, [分道揚鑣], lit. to take different roads and urge the horses on (idiom)/fig. to part ways
打分 dǎfēn, to grade/to give a mark
水分 shuǐfèn, moisture content/(fig.) overstatement/padding
分组 fēnzǔ, [分組], to divide into groups/(computer networking) packet
分析员 fēnxīyuán, [分析員], analyst (e.g. of news)
缘分 yuánfèn, [緣分], fate or chance that brings people together/predestined affinity or relationship/...
绝大部分 juédàbùfen, [絕大部分], overwhelming majority
划分 huàfēn, [劃分], to divide up/to partition/to differentiate
学分 xuéfēn, [學分], course credit
分校 fēnxiào, branch of a school
分清 fēnqīng, to distinguish (between different things)/to make distinctions clear
积分 jīfēn, [積分], integral (calculus)/accumulated points (in sports, at school etc)/total credits ...
微积分 wēijīfēn, [微積分], calculus/differentiation and integration/calculus of infinitesimals 微 and integr...
本分 běnfèn, (to play) one's part/one's role/one's duty/(to stay within) one's bounds/dutiful...
分派 fēnpài, to assign (a task to different people)/to allocate
百分点 bǎifēndiǎn, [百分點], percentage point
分红 fēnhóng, [分紅], dividend/to award a bonus
安分 ānfèn, content with one's lot/knowing one's place
分子式 fēnzǐshì, molecular formula
五五分 分机 fēnjī, [分機], (telephone) extension/CL:臺|台[tái]
记分 jìfēn, [記分], to keep score
分神 fēnshén, to give attention to sth/please give (some of your valuable) attention to my tas...
分工 fēngōng, to divide up the work/division of labor
分行 fēnháng, branch of bank or store/subsidiary bank
分店 fēndiàn, branch (of a chain store)/annex
百分之十 三分之二 处分 chǔfèn, [處分], to discipline sb/to punish/disciplinary action/to deal with (a matter)/CL:個|个[gè...
分期付款 fēnqīfùkuǎn, to pay in installments/payment in installments
公分 gōngfēn, centimeter/gram
分割 fēngē, to cut up/to break up
分区 fēnqū, [分區], allocated area (for housing, industry etc)/district
分隔 fēngé, to divide/to separate/partition
四分之三 分身 fēnshēn, to spare time for a separate task/doppelgänger/sockpuppet (Internet slang)
最高分 百分之 bǎifēnzhī, percent
犯罪分子 分得 分化 fēnhuà, to split apart/differentiation
十分之一 shífēnzhīyī, one tenth
见分晓 分级 fēnjí, [分級], to rank/to grade/to classify/rank/grade/classification
五分之一 wǔfēnzhīyī, one fifth
分界线 fēnjièxiàn, [分界線], dividing line
零分 分析家 fēnxījiā, (political) analyst
分毫 fēnháo, fraction/slightest difference/hairsbreadth
安分守己 ānfènshǒujǐ, to be content with one's lot (idiom)/to know one's place
分文 fēnwén, a single penny/a single cent
分销 fēnxiāo, [分銷], distribution/retail store
七分 六分 分公司 fēngōngsī, subsidiary company/branch office
百万分之一 百分之一 分寸 fēncun, propriety/appropriate behavior/proper speech or action/within the norms
百分比 bǎifēnbǐ, percentage
知识分子 zhīshifènzǐ, [知識分子], intellectual/intelligentsia/learned person
恰如其分 qiàrúqífèn, (idiom) appropriate/apt/just right
有分寸 分会 fēnhuì, [分會], branch
黑白分明 百分之五 分叉 fēnchà, fork/bifurcation/to divide
内分泌 nèifēnmì, [內分泌], endocrine (internal secretion, e.g. hormone)
计分 jìfēn, [計分], to calculate the score
分家 fēnjiā, to separate and live apart/division of a large family into smaller groups
八分之一 bāfēnzhīyī, one eighth
瓜分 guāfēn, to partition/to divide up
分内 fènnèi, [分內], one's job or duty/within one's remit
分流 fēnliú, bypass
糖分 百分之五十 组成部分 zǔchéngbùfèn, [組成部分], part/component/ingredient/constituent
分摊 fēntān, [分攤], to share (costs, responsibilities)/to apportion
分赃 fēnzāng, [分贓], to share the booty/to divide ill-gotten gains
争分夺秒 zhēngfēnduómiǎo, [爭分奪秒], lit. fight minutes, snatch seconds (idiom); a race against time/making every sec...
分子结构 分辨率 fēnbiànlǜ, resolution (of images, monitors, scanners etc)
养分 yǎngfèn, [養分], nutrient
非分之想 千分之一 得分手 盐分 分泌物 fēnmìwù, secretion
万分之一 十二分 shíèrfēn, exceedingly/hundred percent/everything and more
八分 福分 fúfen, one's happy lot/good fortune
分秒必争 fēnmiǎobìzhēng, [分秒必爭], seize every minute and second (idiom); not a minute to lose/every moment counts
分层 fēncéng, [分層], lamination/layering/stratification/delamination
百分之八十 分界 分装 fēnzhuāng, [分裝], to divide into portions/to package in smaller quantities/to separate into loads
记分牌 六分之一 liùfēnzhīyī, one sixth
黄金分割 huángjīnfēngē, [黃金分割], golden ratio/golden section
百分之三十 密不可分 mìbùkěfēn, inextricably linked (idiom)/inseparable
百分之九十 九分 百分之四十 情分 qíngfèn, mutual affection/friendship
分秒 分段 fēnduàn, segment
分房 fēnfáng, to sleep in separate rooms/distribution of social housing
分贝 fēnbèi, [分貝], decibel
分析仪 百分之十五 分期 fēnqī, by stages/staggered/step by step/in installments
分批 fēnpī, to do sth in batches or groups
百分之二 九又四分之三 分拣 分外 fènwài, exceptionally/not one's responsibility or job
均分 jūnfēn, to split/to divide equally
百分之一百 bǎifēnzhīyībǎi, one hundred percent/totally (effective)
分析器 fēnxīqì, analyzer
分布图 fēnbùtú, [分佈圖]/[分布圖], scatter diagram/distribution chart/histogram, scatter diagram/distribution chart...
五十分 不法分子 bùfǎfènzǐ, lawbreakers/offenders
分水岭 fēnshuǐlǐng, [分水嶺], dividing range/drainage divide/(fig.) dividing line/watershed
分身术 分门别类 fēnménbiélèi, [分門別類], to organize by categories/to classify
百分之二十 分裂主义 fēnlièzhǔyì, [分裂主義], separatism
分布式 fēnbùshì, [分佈式], distributed
分内事 分包 fēnbāo, to subcontract
分之 fēnzhī, (indicating a fraction)
分立 fēnlì, to establish as separate entities/to divide (a company etc) into independent ent...
分管 fēnguǎn, to be put in charge of/to be responsible for/branched passage
分送 fēnsòng, to send/to distribute
切分 分离器 百分之六十 十亿分之一 记分员 二十分 百分之七 分光计 分局长 分子生物学 fēnzǐshēngwùxué, [分子生物學], molecular biology
二分 èrfēn, second part/the equinox
百分之九十九 分晓 fēnxiǎo, [分曉], the result (becomes apparent)/now one understands
分针 fēnzhēn, [分針], minute hand (of a clock)
百分之二十五 分分秒秒 难舍难分 nánshěnánfēn, [難捨難分], loath to part (idiom); emotionally close and unwilling to separate
百分之四 四十分 叁分之一 春分 Chūnfēn, Chunfen or Spring Equinox, 4th of the 24 solar terms 二十四節氣|二十四节气 21st March-4th ...
七分之一 qīfēnzhīyī, one seventh
公分母 十五分 微分 wēifēn, (math.) differential (of a function)/differential (equation etc)/to differentiat...
分忧 fēnyōu, [分憂], to share tribulations/to help sb with worries and difficulties
积极分子 jījífènzǐ, [積極分子], enthusiast/(political) activist
分站 fēnzhàn, substation
高分子 gāofēnzǐ, macromolecule/polymer
分辩 fēnbiàn, [分辯], to explain the facts/to defend against an accusation
十分之九 分光仪 伍分 八二分 二分之 百分之一千 百分之二百 平分秋色 píngfēnqiūsè, to both share the limelight/to both have an equal share of
分类法 泾渭分明 JīngWèifēnmíng, [涇渭分明], as rivers Jing and Wei separate clearly (idiom)/to be entirely different
少部分 十一分 三十分 陆分 内分泌腺 nèifēnmìxiàn, [內分泌腺], endocrine gland/gland producing internal secretion, e.g. hormone
十分之 百万分之二 二十分之一 亿分之亿 组分 zǔfèn, [組分], components/individual parts making up a compound
十八分 分属 fēnshǔ, [分屬], classification
分号 fēnhào, [分號], semicolon (punct.)
光谱分析 guāngpǔfēnxī, [光譜分析], spectral analysis
分电器 分母 fēnmǔ, denominator of a fraction
分枝 fēnzhī, branch
五分之四 二十五分 分院 分词 fēncí, [分詞], participle/word segmentation
名分 míngfèn, a person's status
十分之四 百分之六十五 百万分之 二分之一 èrfēnzhīyī, one half
八又二分之一 细分 xìfēn, [細分], subdivision/segmentation
等分 děngfēn, division into equal parts/equipartition
百分之七十 四十五分 亿万分之一 百分之八 分块 总分 zǒngfēn, [總分], overall score/total points
分列式 fēnlièshì, (military) march-past
三分之 九分之一 jiǔfēnzhīyī, one ninth
入木三分 rùmùsānfēn, written in a forceful hand/penetrating/profound
分式 亿分之一 分厂 分付 fēnfù, variant of 吩咐[fēn fù]
六又八分之一 分社 fēnshè, subdivision or branch of an organization/news bureau
百分之四十五 分庭抗礼 fēntíngkànglǐ, [分庭抗禮], peer competition/to function as rivals/to make claims as an equal
六十七分 百分之一百一 八分之五 分数线 fēnshùxiàn, [分數線], horizontal line (in a fraction)/minimum passing score
百分之九 不可分割 bùkěfēngē, inalienable/unalienable/inseparable/indivisible
正态分布 zhèngtàifēnbù, [正態分布], (math.) normal distribution/Gaussian distribution
十万分之一 一万亿分之一 二分之三 二百分之一 百分之两百 百分之三 秋分 Qiūfēn, Qiufen or Autumn Equinox, 16th of the 24 solar terms 二十四節氣|二十四节气 23rd September-...
五千万分之一 因式分解 yīnshìfēnjiě, factorization
二又二分之一 百分之一万 五十三分 八十分 六四分 五分之二 五分之三 十六分之一 积分器 百分之八十五 百分之六 分步 分光镜 八又四分之三 分句 fēnjù, clause (grammar)
分子量 fēnzǐliàng, molecular mass
外分泌 wàifēnmì, exocrine/external secretion (e.g. saliva)
一亿七千五百万分之一 五十分之一 百分之十三 百分之十九 分文不取 fēnwénbùqǔ, to give for free
十分之八 百分之九十九点九 八分之一又十四分之三 七又四分之三 辈分 bèifèn, [輩分], seniority in the family or clan/position in the family hierarchy
四六分 五万分之一 百分之一百四十五 百分之三十五 四百分之一 四十三分 按劳分配 ànláofēnpèi, [按勞分配], distribution according to work
三亿四千八百万分之一 百分之三点七 百分之九十八 七十五分 百分之一亿万 百分之九十七 分离舱 千分尺 三七分 分列 fēnliè, to divide into rows/to identify subcategories/to break down into constituent par...
九一分 分体 十六分 零三分 百分之八百 七又八分之一 千分之千 分配器 fēnpèiqì, dispenser (for consumables such as liquid soap)/splitter (for cable TV signal et...
千分之五 分档 百分之五百 四十八分 百分之五十五 八分之二 八分之三 职分 zhífèn, [職分], duty
四分之 百分之四十一 三又二分之一 非分 fēifèn, improper/presumptuous/assuming/overstepping one's bounds/also written 非份[fēi fèn...
爱憎分明 àizēngfēnmíng, [愛憎分明], to make a clear difference between what one likes and what one hates/to have wel...
十分之七 百分之一百万 百分之一百五 九十九万零七千分之一 十分之六 四又四分之三 一十分 六十分 才分 cáifèn, ability/talent/gift
百分之六百 零一分 五又二分之一 零七分 一一分 五十六又三分之一 百分之八五十 一百分之一 工分 gōngfēn, work point (measure of work completed in a rural commune in the PRC during the p...
百分之三百 百亿亿分之一 五又四分之一 四百万分之一 一分之 分散剂 二分法 十七分 难解难分 nánjiěnánfēn, [難解難分], hard to untie, hard to separate (idiom); inextricably involved/locked in battle
十亿分之 九分之三 千万分之一 百分之两百一 百分之一亿 一又八分之一 百万分之四 四分之二 百万分之六 百万分之五 十六分之五 伍十分 积分学 jīfēnxué, [積分學], integral calculus
百分数 bǎifēnshù, [百分數], percentage
六一分 百分之七十五 分子筛 fēnzǐshāi, [分子篩], molecular sieve
生分 shēngfen, estranged
三十六分 分化瓦解 三十分之一 六分之五 六分之二 百分之千 二八分 分类学 fēnlèixué, [分類學], taxonomy/taxology/systematics
一又四分之一 四万分之一 十分之一千 大分子 dàfēnzǐ, macromolecule (chemistry)
一又三分之一 五分之 百分率 bǎifēnlǜ, percentage/percent
量 ⇒
力量 lìliang, power/force/strength
尽量 jǐnliàng/jìnliàng, [儘量]/[盡量], as much as possible/to the greatest extent, as much as possible/to the greatest ...
能量 néngliàng, energy/capabilities
大量 dàliàng, great amount/large quantity/bulk/numerous/generous/magnanimous
商量 shāngliang, to consult/to talk over/to discuss
量 liáng/liàng, to measure, capacity/quantity/amount/to estimate/abbr. for 量詞|量词[liàng cí], clas...
数量 shùliàng, [數量], amount/quantity/CL:個|个[gè]/quantitative
质量 zhìliàng, [質量], quality/(physics) mass/CL:個|个[gè]
过量 guòliàng, [過量], excess/overdose
重量 zhòngliàng, weight/CL:個|个[gè]
剂量 jìliàng, [劑量], dosage/prescribed dose of medicine
胆量 dǎnliàng, [膽量], courage/boldness/guts
含量 hánliàng, content/quantity contained
测量 cèliáng, [測量], survey/to measure/to gauge/to determine
重量级 zhòngliàngjí, [重量級], heavyweight (boxing etc)
热量 rèliàng, [熱量], heat/quantity of heat/calorific value
衡量 héngliáng, to weigh/to examine/to consider
销量 xiāoliàng, [銷量], sales volume
较量 jiàoliàng, [較量], to pit oneself against sb/to compete with sb/contest/battle/to haggle/to quibble
量子 liàngzǐ, quantum
音量 yīnliàng, sound volume
少量 shǎoliàng, a smidgen/a little bit/a few
限量 分量 fēnliàng/fènliang, (vector) component, quantity/weight/measure
微量 wēiliàng, a smidgen/minute/micro-/trace (element)
变量 biànliàng, [變量], variable (math.)
打量 dǎliang, to size sb up/to look sb up and down/to take the measure of/to suppose/to reckon
前途无量 qiántúwúliàng, [前途無量], to have boundless prospects
量级 工作量 gōngzuòliàng, workload/volume of work
酒量 jiǔliàng, capacity for liquor/how much one can drink
份量 fènliang, see 分量[fèn liang]
用量 yòngliàng, quantity used/usage/consumption/dose
容量 róngliàng, capacity/volume/quantitative (science)
流量 liúliàng, flow rate/rate/throughput/site traffic (Internet)
考量 kǎoliáng, to consider/to give serious consideration to sth/consideration
电量 diànliàng, [電量], quantity of electric charge or current
产量 chǎnliàng, [產量], output
微量元素 wēiliàngyuánsù, trace element (chemistry)
思量 sīliang, to reckon/to consider/to turn over in one's mind
估量 gūliang, to estimate/to assess
销售量 充其量 chōngqíliàng, at most/at best
发行量 计量 jìliàng, [計量], measurement/to calculate
轻量级 qīngliàngjí, [輕量級], lightweight (boxing etc)
量子力学 liàngzǐlìxué, [量子力學], quantum mechanics
武装力量 wǔzhuānglìliàng, [武裝力量], armed force
量刑 liàngxíng, to assess punishment/to determine the sentence (on a criminal)
批量 pīliàng, batch/lot
掂量 diānliang, to weigh in the hand/to consider/to ponder
度量 dùliàng, measure/tolerance/breadth/magnanimity/(math.) metric
量器 liángqì, measuring vessel/measuring apparatus
不可限量 肺活量 fèihuóliàng, (medicine) vital capacity
矢量 shǐliàng, vector (spatial)
量化 liànghuà, to quantize/quantization/quantitative
向量 xiàngliàng, vector
气量 qìliàng, [氣量], (lit. quantity of spirit)/moral character/degree of forbearance/broad-mindedness...
储量 chǔliàng, [儲量], remaining quantity/reserves (of natural resources, oil etc)
总量 zǒngliàng, [總量], total/overall amount
一定量 当量 dāngliàng, [當量], equivalent/yield
不自量 bùzìliàng, not take a proper measure of oneself/to overrate one's own abilities
小量 xiǎoliàng, a small quantity
适量 shìliàng, [適量], appropriate amount
定量 dìngliàng, quantity/fixed amount/ration
食量 shíliàng, quantity of food
需求量 海量 hǎiliàng, huge volume
含氧量 动量 dòngliàng, [動量], momentum
雨量 yǔliàng, rainfall
存量 cúnliàng, reserves
水量 shuǐliàng, volume of water/quantity of flow
饭量 降雨量 jiàngyǔliàng, precipitation/quantity of rainfall
不可估量 bùkěgūliàng, inestimable/incalculable/beyond measure
增量 zēngliàng, increment
超量 无量 wúliàng, [無量], measureless/immeasurable
运动量 量子论 liàngzǐlùn, [量子論], quantum theory (physics)
使用量 shǐyòngliàng, volume of use/usage amount
质量上乘 排放量 肚量 常量 chángliàng, a constant (physics, math.)
雅量 yǎliàng, magnanimity/tolerance/high capacity for drinking
自不量力 zìbùliànglì, to overestimate one's capabilities (idiom)
信息量 减量 耗油量 hàoyóuliàng, fuel consumption
量力而行 liànglìérxíng, to assess one's capabilities and act accordingly (idiom); to act within one's co...
交易量 身量 shēnliang, height (of a person)/stature/fig. reputation/standing
惯量 guànliàng, [慣量], inertia (mechanics)
光量子 新生力量 丈量 zhàngliáng, to measure/measurement
量筒 liángtǒng, graduated measuring cylinder/volumetric cylinder
车流量 数量级 shùliàngjí, [數量級], order of magnitude
出口量 供给量 含金量 供应量 原子量 yuánzǐliàng, atomic weight/atomic mass
有生力量 用电量 运输量 yùnshūliàng, [運輸量], volume of freight
量角器 liángjiǎoqì, protractor/angle gauge
客流量 功德无量 gōngdéwúliàng, [功德無量], no end of virtuous achievements (idiom); boundless beneficence
生产量 人流量 业务量 标量 biāoliàng, [標量], scalar quantity
排水量 páishuǐliàng, displacement
消费量 最轻量级 需要量 分子量 fēnzǐliàng, molecular mass
发电量 fādiànliàng, [發電量], (generated) electrical energy
水流量 量变 liàngbiàn, [量變], quantitative change
消耗量 xiāohàoliàng, rate of consumption
容量瓶 含沙量 hánshāliàng, sand content/quantity of sediment (carried by a river)
增长量 未知量 货运量 蕴藏量 yùncángliàng, [蘊藏量], reserves/amount still in store
载弹量 zàidànliàng, [載彈量], payload
大批量 年产量 含水量 进口量 矢量积 量力 liànglì, to estimate one's strength
量具 liángjù, measuring device
量度 liángdù, to measure/measurement
恒量 量杯 liángbēi, measuring cup/graduated measuring cylinder
载重量 zàizhòngliàng, [載重量], dead weight/weight capacity of a vehicle
量子场论 liàngzǐchǎnglùn, [量子場論], quantum field theory
量程 liángchéng, range (of scales or measuring equipment)
交通量 度量衡 dùliànghéng, measurement
数量化 工程量 冲量 磁通量 cítōngliàng, magnetic flux
量词 liàngcí, [量詞], classifier (in Chinese grammar)/measure word
降水量 jiàngshuǐliàng, precipitation (meteorology)/measured quantity of rain
发热量 量体裁衣 liángtǐcáiyī, [量體裁衣], lit. measure the body then tailor the suit (idiom); fig. to act according to act...
比量 bǐliang, to measure roughly (with the hand, a stick, string etc)
风量 测量学 储藏量 丝量 成交量