loose joint butt是什么意思

用法例句

Bring out the layout of the manual-folding transferring implement,which consist of three mechanical instructions as two differential elevators,a four-bars parallel instruction and a basic folding instruction,depending on all of which the manual-folding transferring implement can be used to transfer patients in the iatri.

针对手术活动中运送病人的环节,从最大限度地减轻病人痛苦的角度出发,结合目前医院的实际要求,基于应用机械工程学原理提出手摇式可折叠移动过床器的设计概念。