coreless coil造句

例句与造句

1. He also developed the first formula for the calculation of the inductance of coreless coils.
2. The vibrating alert of cellular phones is sometimes generated by tiny cylindrical PM field types, but there are also disc-shaped types which have a thin multipolar disc field magnet, and an intentionally unbalanced molded-plastic rotor structure with two bonded coreless coils.
3. It's difficult to find coreless coil in a sentence. 用coreless coil造句挺难的