幸而, 目下已有兼备高磁导率和低磁导率损耗的铁和铁合金,可资利用.Fortunately, iron or iron alloys are available which combine high permeability with small hysteresis loss.铁合金是炼钢的重要和不可缺少的原材料之一.Ferrous alloy is one of important and indispensable raw mate...
The cars of the train are coupled together by shackles.火车的车厢是用钩链连接起来的.The only and shackles you must break are within you.你唯一需要打破的锁链存在于你的内心.They tried to quit themselves of the shackles of metaphysics.他们尽力设法摆脱形而上学的枷锁....