gallows frame〔名词〕双柱托架,门形吊架详细»
gallows frame〔名词〕双柱托架详细»
gallows frame〔名词〕门形吊架详细»
gallows frame〔名词〕门式吊架,龙门起重架详细»
井架drill derrick;gallows frame;head frame;head gear;headgear;shaft-head frame;tower详细»
井架headframe;headgear;horsehead详细»
井架drive block;head gear;headframe;headgear;headstick;headsticks详细»