n. 1.接近；近似。 2.【数学】近似值。 3.概算，略计。 短语和例子 successive approximations 逐次近似计算法。 be a very close approximation to 很接近于…。
the act of bringing near or bringing together especially the cut edges of tissue 同义词：bringing close together,
the quality of coming near to identity (especially close in quantity)
an approximate calculation of quantity or degree or worth; "an estimate of what it would cost"; "a rough idea how long it would take" 同义词：estimate, estimation, idea,
an imprecise or incomplete account; "newspapers gave only an approximation of the actual events"
An approximation is a representation of something that is not exact, but still close enough to be useful. Although approximation is most often applied to numbers, it is also frequently applied to such things as mathematical functions, shapes, and physical laws.
例句与用法
1.
This approximation has been discussed earlier . 这个假定以前讨论过。
2.
Its derivation involved no approximation . 它的推导过程不含近似处理。
3.
The adequacy of this approximation is considered later . 这种近似方法的适用性将在后面再讨论。
4.
Thus planck's law can be used as a good approximation . 因而布朗克定律可以作为一个较好的近似计算。
5.
Such estimates should be considered only as crude approximations . 上述估算结果只能是粗略的近似值。
6.
The jellium model in a certain approximation leads to the equation . 凝胶模型在某种近似下导致下列方程。
7.
To a very good approximation the total energy is conserved . 作为一个非常好的近似，这里的总能量是守恒的。
8.
This type of approximation is made at a finite number of points . 这种近似法是在有限数目的节点处来进行的。
9.
As an approximation he should understand enough computer programming . 他大体上要弄懂足够的计算机程序编制。
10.
There are two approaches generally used to arrive at these approximations . 通常有两种方法用于获得近似解析式。
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