bed joint

基本解释

Describes the structure, working principle and operating method of a joints traction bed controlled by micro-processor.
介绍微电脑多关节牵引床的结构、工作原理和操作方法。
Doctor: : You'd better rest in bed and keep your elbow higher than your heart. Move your finger joints from time to time.
医生：你最好卧床休息，将患肘放在高于心脏的部位上，经常活动你的指关节。
Coal bed joints are a widespread structure in coal beds. They are important objective in study of shaft structure and also a very important engineering geological factor .
煤层节理在煤层中普遍发育，它不仅是矿井构造研究的重要内容，同时也是极其重要的工程地质因素。