你是否有过这样的经历,在快睡着或者已经睡着时,身体突然抖动一下就醒过来了.其实这属于睡眠障碍的一种形式.研究表明有70%以上的人在睡眠中抖动并惊醒过,学术上称这种现象为入睡抽动.有的人会在睡觉时浑身的肌肉不由自主地抖动,有的人还会在睡梦中觉得自己从高空中坠落,这种情况可能是由于缺钙或疲劳过度导致的.关键...
An adaptor is for electrically connecting with pins of an electrical connector. The adaptor includes an insulating housing, a pair of crimping connectors, and two connecting members. The insulating housing includes two holes. The crimping connectors are accommodated respectively in the holes. Each crim...
来自 掌桥科研 喜欢 0 阅读量: 5 作者: Joe,Thompson 摘要: BIG Kaiser has released the Smart Damper boring ba 关键词: Surface finish metal removal rate machining accuracydamping mechanismDAMPERCHATTERdamping systemCOULOMB DAMPING 年份: 2017 ...