Machine parts of irregular shape can be washed very clean by ultrasonics.用超声波能把形状不规则的机件洗得很干净.In medical and other applications of ultrasonics , a variety of electronic instrumentation is used.超声波在医学和其它应用中, 要使用许多电子仪器设备.Th...
比照历史可以发现,中国本轮投资热具有某种前所未有的特性.Historical comparisons suggest there is something unprecedented in China's investment boom.马刺队在本轮仍被新旧问题困扰.Still, Antonio has new and lingering issues this round.本轮比赛仍然波澜不惊, 有实力的职业选手均取得胜利....
They travelled to Portsmouth, where they embarked on the battle cruiser HMS Renown.他们行至朴次茅斯，在那里登上了英国皇家海军“声望号”战列巡洋舰。...a little village a few miles north of Portsmouth.位于朴次茅斯以北几英里处的小村庄They showed little sign of equalising...