Thus, scientists coat the casing with a conducting powder and pass an electric current through it.

因此，科学家们在外壳上涂上导电粉末，并通过它传递电流。

The new method involves passing a current through a molten pool of iron oxide, which drives off the originally sought-after oxygen.

新方法的步骤则包括向熔炉里的氧化铁通电，从而释放原本就炙手可热的氧气。

The bulb works by passing an electric current through a thin filament, which heats it up.

灯泡的工作原理是让电流通过一根细细的灯丝，使它变热。

Ionic wind describes a wind, or thrust, that can be produced when electrical current is passed between a thin and thick electrode.

离子风描述了电流在薄电极和厚电极之间通过时可产生风，或者说推力。

If we pass current through the wire in the opposite direction, the magnetization direction, called polarity, flips the other way.

如果我们以相反的方向使电流通过导线，则磁化方向（称为极性）会翻转为另一方向。

Levitt explains Zap Energy's approach passes a high current through a gas plasma of ionized atoms without negatively charged electrons or positively charged ions.

莱维特解释说，Zap Energy 的方法是将高电流通过电离原子的气体等离子体，而不带负电荷的电子或带正电荷的离子。

The little light bulb doesn't draw nearly as much power, so it uses less voltage for the same amount of current passing through it.

微小的光不会消耗几乎一样多的功率，因此它使用更少的电压来流过相同数量的电流。

Researchers at Oxford University studied 15 student volunteers and found that passing a current through a specific brain region and in a particular direction improved performance in maths puzzles.

牛津大学的研究人员对15名学生志愿者进行了研究，发现对大脑的某个特定区域以特定的方向通电可以提高学生在数学谜语方面的表现。

Inside is a write head, which passes current through a wound wire to generate a magnetic field, causing a small section of the tape to become magnetized.

里面是一个写入磁头，电流通过缠绕的电线产生磁场，使磁带的一小部分被磁化。

It may be that the size of strongly electric fish allows them to withstand their own shocks, or that the current passes out of their bodies too quickly.

可能是强电鱼的体型使它们能够承受自身的电击，也可能是电流从它们体内流出的速度太快。

Inventing a viable electric light was hard, I mean, this is the typical incandescent design, which just involves passing electric current through a material making it so hot that it glows, less than 5% of the electrical energy comes out as light.

发明一种可行的电灯是很困难的, 我的意思是, 这是典型的白炽灯设计, 只需让电流通过某种材料，使其变得非常热，从而发光，只有不到5%的电能以光的形式出现。