The shaft and discs rotate at about forty revolutions per second.竖轴和磁盘每秒钟大约旋转40转.This machine runs at speed of 500 revolutions per minute.这台机器每分钟500转.The drum is rotated at 20 revolutions per minute for 10 minutes.圆筒以每分钟...
People set off fireworks and tooted their car horns.人们点燃烟花，按响汽车喇叭。Car horns toot as cyclists dart precariously through the traffic.骑车人危险地在车流中飞速穿行时，汽车喇叭的嘟嘟声响成一片。Berlin people drank champagne, set off fireworks and tooted ...
那时候植物学和本草学实际上是同义的.In those days botany was virtually synonymous with herbalism.这两个词实际上是同义的.The two words are in effect identical in meaning.所以摄影和时尚不管是人为理解还是表面来说都是同义的.Thus both photography and fashion are synonymous with ...
It is resistant to borohydride reduction in alcoholic solvents.在醇溶剂中,它不能被硼氢化物还原.These include dyes, adhesives, solvents, detergents, metals, and other foreign materials.其中包括染料, 粘合剂, 溶剂, 洗涤剂 、 金属等外界物质.In some solvents, th...