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。

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In theory, shifting the estimated 215, 000 houses these agencies hold nationwide to the rental market would have the dual effect of lifting sinking home prices and lowering rising rents.

FORBES: City Governments and the Great Housing Beyond

The tailgate is kind of heavy, though, and lowering the cab wall requires some lifting, as well, so this isn't a vehicle for the weak.

CNN: Chevy Avalanche: Big truck for the real world

Producers in silver cut more longs than shorts, lifting their net short position and swap dealers added longs and cut shorts, lowering their net-short position.

FORBES: FOCUS: Speculators Shift to Selling In U.S. Precious Metals -CFTC