成正比的英文：
proportional to

参考例句：

An electric current varies directly as the electromotive force and inversely as the resistance.
电流的大小与电动势成正比，与电阻成反比。

The undeniable fact is that the amount of advertisement and economical development is directly proportional.
不可否认的事实是﹐广告的多少是和经济发达的程度成正比的。

1. The volume of a gas varies(directly) with (as) the temperature.
气体的体积和温度成正比。

The length of the chain molecule is proportional to the kinetic chain length
链分子的长度与动力学链长成正比。

A man's vanity is actually in proportion to ignorance
一个人的虚荣心实际上和他的愚蠢程度成正比

Loss of weight is directly proportional to the rate at which the disease is progressing.
体重的下降与病情发展的速度成正比。

10. With a given resistance, the current varies directly as the voltage.
在给定电阻情况下,电流和电压成正比。

Strength in cutting-tool material is not always proportional to hardness.
切削刀具材料的强度并不都是与硬度成正比的。

One very important feature of pseudo forces is that they are always proportional to the masses
赝力的一非常重要的特征是，它们永远与质量成正比。

We now discuss the case of a force that is proportional to the first power of the velocity.
现在，我们要讨论摩擦力与速度的一次幂成正比的情况。

proportional是什么意思：
adj. 成比例的；相称的，均衡的
n. 比例项

extreme term of proportion
比例外项

A large proportion of the country is desert.
这个国家的大部分地方是沙漠。

They proportioned their house well.
他们把房子布置得相称协调。

They held a banquet of epic proportions.
他们举行了盛大的宴会。

His features are in proportion.
他五官端正。