With the frequent characteristics only, we can Judge the flying quality of a DFC aircraft easiely.利用频域特性, 可以方便地评定DFC飞机飞行品质等级.This paper introduces the control method of the DFC - motor system with PLC.介绍了用PLC实现数字变频器 - 电动...
Most of those attending the funeral stood silently showing little emotion.出席葬礼的人大多都面无表情地静静站着。The dead included six people attending a religious ceremony.死者包括6位参加宗教仪式的人。Those not attending the meeting may vote by proxy.那些...