频率计不好用了, 需要更换.The frequency meter is not in effectiveness, to be renewed.数字频率计是一种基本的测量仪器.Measurement of time - frequency electronic measurement is an important area.介绍了数字频率计设计的基本原理.This paper has introduced the basic pri...
Accept my warmest congratulations on your new set of victories and penetrations on your main front.你们在主要战线上获得一系列新的胜利和突破,请接受我们最热烈的祝贺.Provides adjustable alignment , eliminates body wall penetrations.具有可调整定位功能, 避免阀体壳壁被穿透.R...
Coverage of polymer particles is obviously influenced by emulsifier structure.显然聚合物胶粒总数受乳化剂结构的影响.NP , OP : used for pesticide emulsifier, wetter and other industrial surfactant.用于农药乳化剂, 可湿性粉剂及其它工业用表面活性剂.Series: used for ...
Most species of harrier are included in the genus Circus.大多数种类的鹞包含在鹞这个种属中.The fascinations of the circus are endless.马戏表演非常吸引人.There is a Piccadilly Circus in London.在伦敦有个皮卡迪利广场.The circus elephants were led into the are...
Judy reached into her handbag and handed me a small printed leaflet.朱蒂把手伸进提包,拿出一张小的印刷传单给我。Judy spoke in a loud, rather unfriendly voice.朱迪说话时声音很大,十分不友好。Judy said sadly, "He has abandoned me."朱迪伤心地说,“他抛弃了我。”...