短語詞組短語rope -pulley E hoist 索滑輪提陞機(jī)rope round pulley 繞繩滑輪;導(dǎo)繩器;繞繩輪軸rope and pulley type 繩索滑輪式rope to pulley ratio 繩逕;輪逕比Dynamic rope for pulley block 滑輪組跑繩rope pulley flywheel 繩索飛輪 返回 rope pulley