短語(yǔ)詞組短語(yǔ)elbow bend pipe 肘形彎管;彎頭;彎管elbow -pipe flowmeter 彎管流量計(jì)elbow sounding pipe 肘式測(cè)深管elbow w pipe 彎管flange and elbow bend pipe 法蘭盤彎管ge and elbow bend pipe 法蘭盤彎管right angle elbow pipe 直角彎管 返回 elbow pipe