Improving the On-site Production Supervision of the Welding Pipe for Oil and Gas Transmission Systematically, comprehensively, Scientifically and Efficiently是什么意思_Improving the On-site Production Supervision of the Welding Pipe for Oil and Gas Transmission Systematically, comprehensively, Scientifically and Efficiently在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句