Word · Frequency #10242
approximation
近似值；粗略估计；约数
A rough calculation or estimate of a quantity, degree, or worth that is not exact
- 1.
The act, process or result of approximating, as
近似的行为、过程或结果,如
- 2.
an approximate calculation of quantity or degree or worth
对数量、程度或价值的近似计算
- 3.
The act, process or result of approximating, as:
近似的行为、过程或结果:
- 4.
the quality of coming near to identity (especially close in quantity)
接近相同的特性(尤其在数量上)
- 5.
an imprecise or incomplete account
不精确或不完整的描述
近似；接近；近似过程；近似性；接近（尤指数量的接近）；粗略描述；不完整叙述；近似的行为、过程或结果,如；对数量、程度或价值的近似计算
In use
The engineer made a rough approximation of the bridge's load capacity before the final calculation.
This mathematical model provides a good approximation of the population growth over time.
In many physics problems, we use approximations to simplify complex equations.
newspapers gave only an approximation of the actual events
an approximation of [sth]
This is only an approximation of the actual value.
这只是实际值的一个近似。
a [adj] approximation
常用形容词包括 rough, good, close, reasonable 等。
We need a rough approximation to start the calculations.
Connections
Collocations
- rough approximation
- 粗略的近似值
- His estimate was only a rough approximation of the true cost.他的估计只是真实成本的粗略近似值。
- close approximation to
- 与…非常接近的近似值
- This model provides a close approximation to the observed data.这个模型与观测数据非常接近。
- first approximation
- 初步近似；第一近似值
- As a first approximation, we can assume the population is evenly distributed.作为初步近似，我们可以假设人口均匀分布。
- reasonable approximation
- 合理的近似值
- The survey gives a reasonable approximation of public opinion.这项调查给出了对公众意见的合理的近似值。
- approximation of the truth
- 对真相的近似描述
- The news report was only an approximation of the truth.这篇新闻报道只是对真相的近似描述。
Learner notes
Memory Tip
想象约等于号≈，两端接近但不重合；approximation 就是这样算出来的“近似值/约数”。
Context & Register
语域：neutral 常见场景：数学与科学写作、统计或工程计算、日常描述粗略估计或相似程度 该词为名词，通常用于数学、统计等学术或技术语境，指“近似值”或“近似计算”；日常表达“粗略估计”时也能使用，但语气比“估计”稍书面化。整体属于中性偏正式。
Grammar Note
常与of连用
Pronunciation & Spelling
这些词都与目标词的尾音 /ˈmeɪʃən/ 押韵：它们都有重读元音 /eɪ/ 和结尾 /ʃən/。注意形似但音不同的词，如 question /ˈkwestʃən/、mention /ˈmenʃən/、fashion /ˈfæʃən/，它们元音不同，并不押韵。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.