Natural fabrics like silk and wool are better insulators than synthetics.丝绸和羊毛之类的纯天然织物比合成纤维的保暖性更好。To reduce heat losses the pipes are covered by thermal insulators.为了减少热散失,管子外包保温层.Crystals may be insulators, semiconducto...
Crystals may be insulators, semiconductors, or conductors.晶体可以是绝缘体, 半导体, 或导体.Natural fabrics like silk and wool are better insulators than synthetics.丝绸和羊毛之类的纯天然织物比合成纤维的保暖性更好。Polluted insulators may flashover at any time...
* 2千瓦的电炉a 2kW electric fire年用电量平均为每小时500千瓦.It's about 500 kilowatts per hour on average.我们有一台三百千瓦的事故备用发电机.We have an emergency - standby electric generator with a capacity of 300 kilowatts....
九的六次幂是多少?How much is the sixth power of nine?这位世界排名第九的选手必须有更出色的表现才能击退戴尔强有力的挑战。The world No. 9 had to raise his game to see off a strong challenge from Dale.天才是靠百分之一的灵感与百分之九十九的苦汗[努力].Genius is one percent, inspiration and...
Kinking endotracheal tube ( ETT ) is not an infrequent problem during general anesthesia.在全身麻醉插管病患中,气管内管弯折其实是常见的问题.The strands are in good condition and without broken wires, kinking and smooth surface.绳线状况良好并无断线 、 绞缠或磨平...
Authority certifies the identity of sites on the internet.权威负责向Internet网站授予其标识.My signature certifies the accuracy and completeness of the information provided.我以签名保证提供之信息的准确性和完全性.Whoever does accept his testimony certif...