The magnetic cores of transformers and other apparatus are laminated.把变压器及其它仪器的磁心分层.Several distributor transformers had fallen from the poles, and secondary wires and service drops were down.几个配电变压器从电线杆上摔下来, 副线及吊饰也垂下来.R...
Several distributor transformers had fallen from the poles, and secondary wires and service drops were down.几个配电变压器从电线杆上摔下来, 副线及吊饰也垂下来.The magnetic cores of transformers and other apparatus are laminated.把变压器及其它仪器的磁心分层.A...
今天是 愚人节.Today is April Fools'Day .是的.我们有感恩节 、 劳动节,以及愚人节.Yes, we have Thanksgiving Day, Labor Day and April Fool's Day.愚人节在四月一号.April Fool's Day is on April 1....
Hence, ebonite is in fact one kind of thermosets.因此, 硬质橡胶实质上是一种热固性塑料.Some properties were also discussed and the multi - functional ebonite would be promising in future development.还简述了硬质橡胶性能,指出通过改性使其 高 功能化是这类硬质橡胶材料的发展方向...