slide onslideoff method of handling heavy loads

同义词释义

1)slide onslide-off method of handling heavy loads,重货装卸滑进滑出法2)cargo block,装卸货滑车3)cargo chute,货物装卸滑槽4)cargo chute,卸货滑槽5)wrecking block,重货滑车6)loading spout,装货滑槽