The tube nut is placed over the end of the copper tube to be joined;the tube end then is flared out at an approximate 45 degree angle by a flaring tool.是什么意思_The tube nut is placed over the end of the copper tube to be joined;the tube end then is flared out at an approximate 45 degree angle by a flaring tool.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句