A fixed capacity compressor is usually fitted with an electromagnetic clutch giving the A/C system an ability to engage and disengage drive to the compressor.

一个固定电容压缩机通常配有一个电磁离合器，这两者共同作用使得A/C系统能够连接和断开到压缩机的驱动。

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Maxwell showed that light was a vibration in the electromagnetic field, and that it travelled at a constant speed, c, in a vacuum.

马克思·威尔指出光是种电磁波，其在真空中的传播速度是个常数c。

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Li C Y. Yuan H Q. Yang L S Measurements of the mechanical and electromagnetic properties of rare earth giant magnetostriction materials.

袁惠群。李成英。周卓稀土超磁致伸缩材料应力与电磁耦合特性的实验研究。

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