显然磁导率不是常数.It is evident that the permeability is not a constant.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.因此, 通过测量磁导率, 残余应力...
His defeat was quite a comedown for all of us.他的失败令我们全体感到失望.She find it a comedown to listen to her former subordinate.她觉得要听她以前部下的指挥很降格.The clouds comedown so suddenly we had no warning.突然天气乌云密布,此前毫无征兆....