1、 Where the counterweight device has no safety gear , relevant parts should be installed before entering hoistway.
7对重如没有安全钳装置的, 应在未进入井道前将有关零件装妥.
来源:网络期刊摘选
2、 A weight that acts to balance another ; a counterpoise or counterweight.
一种为滑框准备的平衡锤.
来源:网络期刊摘选
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