To weld and repair the aircraft landing gear by manual TIG welding instead of shielded metal arc welding(SMAW welding)which is used in air unit now is tentatively discussed.是什么意思_To weld and repair the aircraft landing gear by manual TIG welding instead of shielded metal arc welding(SMAW welding)which is used in air unit now is tentatively discussed.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句