荡秋千,是熟知的机械共振的例子.A common example of mechanical resonance is provided by pushing a swing.调谐收音机或电视接收机是电共振的例子.Tuning a radio or television receiver is an example of electrical resonance.地球上 非 共振的灵魂来自何方?Where do the non - re...
His prose is vigorous and dense, occasionally to the point of obscurity.他的散文文笔有力、内容庞杂，有时几近晦涩。Her prose style is not always felicitous; she tends to repetition.她的行文风格并非总是恰到好处，往往爱重复。He discoursed for several hours on Frenc...
我们把桌子刷成与卧室窗框一致的颜色。We painted our table to match the window frame in the bedroom.打磨木头的表面，为刷清漆做准备。Rub the surface of the wood in preparation for the varnish.这幢楼刷的是浅灰色的灰泥，看上去有些陈旧。The building was of greyish plaster and look...
Steven killed the bird with his pocketknife.史蒂文用随身带的小刀杀死了这只小鸟.I got a really good pocketknife for $ 10.我花十美元买了一把非常好的折叠刀.Now, use your pocketknife to touch the mica and see what will happen.现在你用小刀去触及岩石中的云母,看看会产生什么现象....
The forces of National Socialism were transforming Germany root and branch.纳粹主义势力当时正在彻底改变德国。Living cells have extremely efficient and near - miraculous devices for transforming energy.活细胞中有非常有效的,近乎奇迹的转化能量的元件.That country...
有个犯人刻了一副漂亮的木头象棋。One of the prisoners has carved a beautiful wooden chess set.我象棋下不赢他.I can't beat him at Chinese chess.高校长道: “ 下象棋很好.President Kao said, " Playing chess is fine....
传统的缩酮化、酯化反应工业上多采用浓硫酸作催化剂.Traditional ketalization and esterification reactions are usually catalyzed by concentrated acid in industry.对甲苯磺酸铜是乙二醇与羰基化合物缩醛(酮)化反应的高效催化剂.Acetalization of glycol with carbonyl compounds was car...