The circumferential welding and the straight seam welding at all position can be realizable by using welding crawl equipment for all position together with the flexible metal band track.是什么意思_The circumferential welding and the straight seam welding at all position can be realizable by using welding crawl equipment for all position together with the flexible metal band track.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句