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....
During that time, Snowboarding appealed initially to a small group of surfers, skateboarders, and backcountry enthusiasts.那时候, 单板滑雪吸引了一小批冲浪 、 板和越野的狂热爱好者....
在粗糙不平的水泥窗台上有一条细细的发光水印。A thin, glistening thread of moisture ran along the rough concrete sill.“这应该会很有趣！”他对亚历克斯说,两眼闪闪发光."This ought to be fun," he told Alex, eyes gleaming.云彩像被擦亮的金子一般闪闪发光。The clouds glowed like burnished ...
The cirrhotic process obstructs the intrahepatic portion of the portal venous system.肝硬化使门脉系统的肝内部分受阻.A device or means that obstructs, blocks, or plugs up.堵塞的方法:阻碍, 阻挠或堵塞的工具或途径.The mountain road is so steep that it almos...