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...
Aspiration inking is available from the perspective of pore size account.吸不朱度可以从孔隙不小小角度举行思考.Speed and High efficiency inking with color, Halftones and line works.需高效能的印刷油墨,并带有颜色, 网板及线性操作.The operation cannot be performed...