seamless jointing是什么意思

seamless jointing是什么意思 seamless network seamless union是什么意思呀seamless是什么意思 seamless cloning是什么意思,能不能给科学解释下? seamless machine the original multifunctional seamless Love not Providence seamless bearing grade seamless steel tubes是什么管 Seamless Steel 奉贤哪里有供应的 求准确翻译“Seamless Duplex Line Pipe Seamless Duplex Line Pipe =D 英语翻译We are looking producers of aluminum seamless pipes.dia. PRODUCTION OF COLD DRAWN SEAMLESS STAINLESS STEEL TUBES/PIPE M S SEAMLESS B/W ASTM-A234 WPB ANSI