The body must return identically to its original condition when the loads are released.当去掉载荷时,物体必须恢复到与原来完全一样的状态.The motion is periodic, which means it occurs identically over and over again.这个运动是周期的, 意即运动以同样的形式重复出现.The w...
He frequently donates large sums to charity.他常常向慈善机构捐赠大笔钱款。A substance donates protons to some other substance.一物质向其他物质提供质子.Substance X in turn donates its electron to an iron - containing protein called ferredoxin.X物质又将...
A new system has been devised to control traffic in the city.控制城市交通的新系统已经设计出来。They devised a plan to rob a bank.他们策划抢劫银行.He has devised a process for making gold wires which neither corrode nor oxidise.他设计了一种能够避免腐蚀或氧化的金丝...