单词	quadruple screw thread
释义	quadruple screw thread 四线螺纹
随便看	underground-garage under ground garage underground garage engineering underground garages underground garage ventilation underground garification station underground gas underground gasification underground gasification face underground gasification mining underground gasification of coal underground gasification raw material , mineral underground gasification station underground gasified gas underground gasifier underground gasofied gas underground gasoline tank underground gas pipeline underground gas pipelines underground gas storage under ground gas storage underground gas storage reservoir underground gas storage well underground gas-storage well underground gate valve