pull hands造句

例句与造句

1. 2, when there is no power supply, pulling hand chain could enable the door to rise slowly, pulling deadweight lowering dragline could enable the door to go down at constant speed by deadweight . 3, the door could be positioned accurately at any location with in the travel
   为我公司生产的遥控器和卷门机的配套产品，可在无电的情况下自动实现卷帘门上下，并且在有电的情况下自动充电蓄电。
2. It's difficult to find pull hands in a sentence. 用pull hands造句挺难的