短語詞組短語tower r slewing crane 塔式回轉(zhuǎn)起重機(jī)low -level slewing tower crane [機(jī)]下回轉(zhuǎn)塔式起重機(jī)high -level slewing tower crane [機(jī)]上回轉(zhuǎn)塔式起重機(jī) 返回 tower slewing crane