感生电流

In order for there to be an induced current, we must have a closed circuit .

为了出现感生电流，我们必须有闭合回路。

The second connects the changing magnetic field with the induced current and arose from Faraday's experiment.

第二个是把变化着的磁场跟感生电流结合起来，它是从法拉第的实验中形成的。

But such a rapid change, however it is produced, must create an induced current.

但是不管这种迅速的变化是怎样产生的，它一定会产生感生电流。

The law which goes by his name is a useful rule for predicting the direction of an induced current.

这条用他的名字命名的定律，是判断感生电流方向的极有用的定则。

This change in the number of lines of force is the only essential concept for both the qualitative and the quantitative descriptions of the induced current.

这个力线数目的变化不论对感生电流作定性的或定量的描述都是惟一重要的条件。

The electromagnetic force opposite to the fluid flow is also produced, which makes less impact on the narrow side shells, and results in a pluglike flow in the region under the lower pole of the magnetic field.

计算结果表明，结晶器内流动的钢液在恒稳磁场的作用下，形成了具有封闭回路的感生电流，其主体部分从板坯宽面一侧大范围地向另一侧流动，中途逐渐变大，并绕过水口流动。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。