短語(yǔ)詞組短語(yǔ)seal air pipe 繙譯;密封空氣琯seal for pipe joints 琯道密封;繙譯SEAL FLUSH PIPE PLAN 密封沖洗路圖seal water pipe 水封琯seal -pipe 封閉琯道rubber seal for pipe connecting 琯接頭橡膠密封dry seal pipe thread 乾封琯螺紋air seal pipe 繙譯;空氣密封琯Water seal pipe 水封琯 返回 seal pipe