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...
The red dress had slim black piping around the neck.这条红裙的领口有细细的黑色滚边。He was a slim, solemn, darkly handsome young man.他是个身材修长、表情庄重、皮肤黝黑的帅小伙。He published only three slim volumes of verse in his short life.在他短暂的一生里，他只出版过3卷薄...
这是肉眼胜过雷达的又一事例。It was yet another case where the human eye outperformed radar.自从1939年以来,雷达的每个部分的技术一直在继续不停地发展.Progress in every branch of radar was constant and unceasing during 1939.雷达的原理相当简单.The principle of radar is qui...