Question

英语问题！！！高手请进！！！

其实很简单的问题～
请问英语中正反比怎样表示？
就是xx跟xx成正比或反比～

谢谢～～

Answer 1

成正比
be directly proportional或direct proportion 比如：The electric current varies directly with the voltage.
电流与电压成正比。

成反比
be inversely proportional to 比如：The velocity of the fluid is inversely proportional to the spacing of the streamlines.
流体的流速与流线的间距成反比。

Answer 2

成反比
be inversely proportional to

成正比
be directly proportional to

Answer 3

be inversely proportional to

Answer 4

成正比
比如：The electric current varies directly with the voltage.
电流与电压成正比。