The manipulators structure , operation principle and hydropneumatic system are described systematically in the paper.介绍一种两自由度液压驱动式上料机械手,包括其机构设计 、 工作原理及液压气动系统....
I have tried to pack a good deal into a few words.我尽量言简意赅。The president beat his breast and called that deal a mistake.总裁捶胸顿足,称那是个错误的交易。The deal seems so attractive it would be ridiculous to say no.这笔交易看上去太诱人了,要是拒绝它简直是笑话...