短語詞組短語mast or derrick 井架guyed -mast derrick [機(jī)]把桿起重機(jī)mast -shaped derrick 桅桿式井架single -mast derrick 單桅桿鑽塔the single -mast derrick 單桅桿鑽塔derrick mast 扒桿;起重桅;吊貨桿桅;起重把桿pole derrick derrick mast 起重扒桿man -riding derrick mast 乘人扒桿derrick or mast 井架或便攜式井架 返回 mast derrick