PLC is used in electric system for automatic control of moving, swinging, lifting, lowering operations of the works as well as time intervals between operations.
电气控制采用了PLC，对工件的运行、摆动、上升、下降等动作及间隔时间实现了自动控制。
2
Try "eccentric lifting," in which you focus on lowering the weight during a bench press rather than lifting it.
尝试“提升偏心轮”，在使用举重练习凳时，重点在于降低重量而并非将其举起。
3
It is recommended to breathe in when lifting and out when lowering the weight.