Fingers should be bent, the index finger, two joints, the first of which is to bend, the second joint is straight.
手指要弯曲，食指的两个关节，其中第一个是要弯曲的，第二个关节就是要直。
2
PSL straight travel electric actuator adopts two brackets and one connecter to joint with the valve.
PS L直行程电动直行机构设计采用两个支架和一个连接件与阀门相连。
3
Keep your arms loose and don't lock your elbows, they should be bent in order to absorb any bumps, rather than the knock going straight on to the joint.