单词 | fraction |
释义 | fractionfrac‧tion /ˈfrækʃən/ ●●○ noun [countable] Word Origin WORD ORIGINfraction ExamplesOrigin: 1300-1400 Late Latin fractio, from Latin fractus, past participle of frangere ‘to break’EXAMPLES FROM OTHER DICTIONARIES Thesaurus
Longman Language Activatoran amount that is compared with another amount► percentage Collocations a number or amount that is calculated as part of a total of 100, and is shown using a % sign: percentage of: · The percentage of women students at the university has increased steadily.a high/large percentage: · Most of the coffee we produce is for export -- a high percentage goes to the US.· A high percentage of businesses fail because of the collapse of a major customer or supplier.a low/small percentage: · The disease is serious, and in a small percentage of cases it can be fatal.· The writer only receives a small percentage of the profits from each book sold. ► proportion the number or amount of something, compared with the whole number or amount that exists: proportion of: · The new law is intended to reduce the proportion of road accidents caused by drunk drivers.· a program to increase the proportion of women and black people in the police serviceproportion of something to something: · What is the proportion of men to women in your office?a high/low/large/small proportion: · A high proportion of the products tested were found to contain harmful chemicals. ► ratio a set of numbers, such as '20:1' or '5:1', that shows how much larger one quantity is than another: ratio of something to something: · a school where the ratio of students to teachers is about 5:1 ► rate a measurement showing the number of times that something happens during a particular period or the number of examples of something within a certain period: · Refugees were crossing the border at the rate of 1000 a day.success/failure rate: · Penicillin has a high success rate in treating bacterial infections. ► fraction a very small part of an amount or number: a (small, tiny etc) fraction of something: · The disease affects only a tiny fraction of the population.at a fraction of the cost: · Computers can now do the same job at a fraction of the cost.in a fraction of the time: · A microwave oven cooks food in a fraction of the time required by a normal oven. part of a total amount or number► proportion a part of an amount or number - use this when you are comparing the part with the whole amount or number: proportion of: · What proportion of your income do you spend on food?high/large etc proportion: · The new jobs would largely be unskilled and a high proportion would be in inner city areas.· A significant proportion of the elderly are dependent on the basic state pension.small/tiny proportion: · We get a small proportion of our funding from the government. ► fraction a small part of an amount or number, especially a very small part: fraction of: · Employees' salaries are just a fraction of the total cost of the project.· Faxes are expensive, when you consider you can send emails at a fraction of the cost (=for very much less money).small/tiny fraction: · a problem that affects only a small fraction of the total population ► percentage a part of an amount or number that can be measured and shown exactly compared to the total: percentage of: · What percentage of our students passed the exam?· The percentage of pensioners living below the poverty line has increased by 15% in the last four years.high/large percentage: · A high percentage of the coffee they produce goes to the US.small percentage: · Only a small percentage of African American employees were considered for promotion. WORD SETS► Mathsabacus, nounalgebra, nounangle, nounarc, nounarea, nounarithmetic, nounarithmetic, adjectivearithmetic progression, nounaxis, nounbar chart, nounbar graph, nounbase, nounbinomial, nounbisect, verbBoolean, adjectiveC, nouncalculator, nouncalculus, nouncanonical, adjectivechord, nouncipher, nouncircumference, nouncircumscribe, verbcompass, nouncomplementary, adjectivecomputation, nouncompute, verbconcentric, adjectivecone, nouncongruent, adjectiveconical, adjectiveconstant, nouncontain, verbcoordinate, nouncoordinate, adjectivecos, cosine, nouncube, nouncubic, adjectivecurvature, nouncurve, nouncut, verbdeci-, prefixdeviation, noundiagonal, adjectivediameter, noundifferential calculus, noundigit, noundimension, noundomain, nouneccentric, adjectiveellipse, nounelliptical, adjectiveequal, adjectiveequal, verbequals sign, nounequation, nounequilateral triangle, nounexponential, adjectiveexpress, verbexpression, nounface, nounfigure, nounflow chart, nounformula, nounfraction, nounfractional, adjectivefunction, noungeometric, adjectivegeometry, noungraph, noungraphically, adverbgraph paper, noungrid, nounHCF, helix, nounheptagon, nounhexagon, nounhistogram, nounhypotenuse, nounimperial, adjectiveimproper fraction, nouninfinity, nouninformation theory, nouninnumerate, adjectiveinto, prepositioninverse, adjectiveisosceles triangle, nounline graph, log, nounlogarithm, nounlong division, nounlozenge, nounmath, nounmathematical, adjectivemathematician, nounmathematics, nounmatrix, nounmean, adjectivemedian, nounmedian, adjectivemetric, adjectiveminus, prepositionminus, nounminus, adjectiveminus sign, nounminute, nounmultiplication, nounmultiplication sign, nounmultiplication table, nounmultiply, verbN, nounnumber, nounnumerate, adjectivenumeration, nounoblong, adjectiveobtuse angle, nounoctagon, nounoval, nounparabola, nounparallel, adjectiveparallelogram, nounpentagon, nounpercentage, nounperimeter, nounperpendicular, nounpi, nounpictogram, nounpie chart, nounplane, nounplane geometry, nounplus, prepositionplus, nounplus, adjectiveplus sign, nounpolygon, nounpolyhedron, nounpower, nounprism, nounprobability, nounproof, nounproportion, nounproposition, nounprotractor, nounquadrangle, nounquadrant, nounquadratic equation, nounquadri-, prefixquadrilateral, nounradius, nounratio, nounrectangle, nounrectilinear, adjectiverecur, verbrhombus, nounright angle, nounright-angled triangle, nounroot, nounruler, nounscale, nounscalene triangle, nounscatter diagram, section, nounsegment, nounsemicircle, nounset square, nounsine, nounslide rule, nounsolid, adjectivesolid, nounsolution, nounsolve, verbsphere, nounsquare, adjectivesquare, nounsquare, verbsquare, adverbsquarely, adverbsquare root, nounsubset, nounsubtract, verbsubtraction, nounsum, nounsurface area, nounsymmetrical, adjectivesymmetry, nountangent, nounterm, nountheorem, nounthreefold, adjectivetimes, prepositiontrapezium, nountriangle, nountrigonometry, nountwo-dimensional, adjectivevalue, nounvariable, nounvector, nounVenn diagram, nounvertex, nounvertical, adjectivevolume, nounwork, verbX, nounx-axis, nouny-axis, noun COLLOCATIONS FROM THE CORPUSADJECTIVE► large 1a very small amount of somethingfraction of I got these shoes at a fraction of the original price. She paused for a fraction of a second.2a part of a whole number in mathematics, such as ½ or ¾· In the plasma, the bicarbonate concentration comprises the second largest anion fraction, with chloride being the largest anion fraction.· Arjunas must make up a surprisingly large fraction of the bodies striking Earth.· Down there, it encountered the large fraction of the planet that is still molten, and began to crowd it.· The ring of fire contains a very large fraction of the earthquake activity of the entire planet.· Import prices rise and since imports are a large fraction of consumption, the consumer price index rises right along with imports.· Getting a large fraction of companies involved, however, will require a fundamental change in business attitudes.· Or should the rich man or woman be made to pay a larger fraction of this income as taxes? ► left· Patients with left ventricular ejection fraction greater than 30% and no inducible ventricular arrhythmia comprise a heterogeneous group.· The mean left ventricular ejection fraction was 46%. ► mere· A mere fraction of North sea revenues is to be spent on enforcing the safety regime.· What I had done so far amounted to a mere fraction of nothing at all.· A mere fraction of the population shared in the cultural revolution. ► significant· A significant fraction of their water content can emerge from the explosion at a speed below the escape velocity of Mercury.· Although much of this heat was radiated back into space, a significant fraction was retained by the growing planet. ► small· Most humans use only a small fraction of their total useful brainpower. 8.· And the fact is, his take is a small fraction of the wealth he has created for others.· At one extreme, Murdoch employs a small fraction of the 6,000 production workers he had in Fleet Street.· The Defense Department therefore is paying only a small fraction of the benefits until it gets more money from Congress.· No spacecraft has ever moved faster than a small fraction of this speed.· Many options may be purchased at a very small fraction of the cost of the underlying security.· Even the most significant unions could recruit no more than a small fraction of the workers in their industry.· There are, however, some real gems in a small fraction of the 67 chapters. ► substantial· But over a substantial fraction of the wake width, turbulent and non-turbulent motion alternate.· If such balancing selection maintains a substantial fraction of life-history variation, it will generate negative genetic correlations among life-history traits. ► tiny· The cases reported to Hoffman-La Roche I believe are a tiny fraction of all reactions.· But the passengers are only a tiny fraction of the population, basically its middle class.· But the companies are having to point out once again the tiny fraction of land they take up on relation to the whole.· It is good to recall that astronomers cover only a tiny fraction of the sky at any time.· Its area is a tiny fraction of that occupied by the 21 hostile Arab states.· Most new radical ideas in science turn out to be incorrect; only a tiny fraction turn out to be correct.· As you can see from Table 16.2, they account for a tiny fraction of total assets.· In other words, Salomon carved a tiny fraction out of each financial transaction. ► ventricular· Patients with left ventricular ejection fraction greater than 30% and no inducible ventricular arrhythmia comprise a heterogeneous group.· The mean left ventricular ejection fraction was 46%. NOUN► class· Within modern capitalist societies the monopoly corporations constitute the dominant class fraction. ► ejection· Patients with left ventricular ejection fraction greater than 30% and no inducible ventricular arrhythmia comprise a heterogeneous group.· Primary end points of the study were infarct size and ejection fraction, and the results revealed no differences between the groups.· It remained a significant predictor when adjusted for clinical, demographic, Holter data and ejection fraction.· Radionuclide left-ventricular ejection fraction was 18%.· After 4 months, cardiac function was reassessed: fractional shortening and ejection fraction was 33% and 47%, respectively.· The mean left ventricular ejection fraction was 46%.· Moreover, mortality and reinfarction rates were similar and left-ventricular ejection fractions at 1 month were virtually identical. ► mole· Note that the mole fraction of either A or B can be used to express the composition of the solution.· The activity of the solvent can be considered to be equal to the mole fraction of the solvent x 1. VERB► move· By moving the hatch a fraction of an inch we could hear what went on below, but we could see nothing. ► open· Leave the inner tent door open a fraction, even if you don't have mesh.· He was reading a newspaper-with some difficulty, as the crush meant he could only open it a fraction.· He stopped outside the kitchen door and carefully cracked it open a fraction - and looked straight into Jane's wide eyes. ► raise· Repeat the exercise but this time raise your body a fraction further with each count for even greater toning.· With toes pointed, raise the leg a fraction higher 20 times, holding each raise for 1 second.· Point the toes and raise the leg a fraction higher 15 times, holding each raise for 1 second.· In the event the Hansard Society raised only a fraction of the sum required and no consultancy payment was made. ► reach· And SeniorNet only reaches a fraction of the seniors using computers.· This is precisely why we have not reached more than a fraction of the people who are now in deepest need.· Each has gone beyond serving a few dozen students, although they still reach only a fraction of the total student population. ► represent· However, both categories represent a small fraction of the population.· Anyway, they represent only a fraction of the long distance paths Britain has to offer.· Wilson points out that the designer side represents only a fraction of the fashion industry's £6.5 billion turnover.· This image represents a tiny fraction of the activities and aspirations of International Women's Day. |
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