原理用英文怎么讲

工作原理英文：operating principle；principle of operation/work。

双语例句：

1、Professor Griffiths explained how the drug appears to work.

格里菲思教授解释了那种药物的工作原理。

2、They work by bouncing microwaves off solid objects.

它们的工作原理是通过固体来反射微波。

3、These machines both work on the same principle.

这两台机器的工作原理是一样的。

4、I won't explain how this works now it might muddle you up.

我现在先不讲解工作原理，那样会使你摸不着头脑的。

5、We should understand the mode of operation of various control devices.

我们应了解各种控制装置的工作原理。