To make an electromagnet you need to send a current through the wire.为了做成电磁体你需要对金属线送电.The principle of electromagnet induction had thus been discovered.电磁感应定律就是这样发现的.Reset pneumatic spring, mechanical spring reset, reset...

n.电磁体，电磁铁...

electromagnet的复数形式为：electromagnets...

electromagnet的音标：electromagnet的英式发音音标为：[ɪ'lektrəʊmægnət]electromagnet的美式发音音标为：[ɪ'lektroʊmægnət]...