Esso Research and Engineering Company has already devised a system for clearing urban roadways that is reported to be cheaper than under-pavement steam or electric coils.

埃索研究工程公司已经开发了个郊区道路清理系统，据报道会比人行道下的蒸汽电力圈更为便宜。

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Electrical mechanics may specialize in working with certain types of apparatus, such as electric motors or transformers, or in performing certain functions, such as winding coils.

电气技师可能专注于某种特定类型的装置，如电动马达或变压器，或执行某些功能，例如绕组线圈。

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The electric current supplied to the coils in the guideway walls is constantly alternating to change the polarity of the magnetized coils.

供给导轨槽内线圈的电流交互变化着电磁线圈的极性。

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On the other side the electrons return via the second electrode, having passed through the coils of an electric motor that drives the wheels of the car.

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