For high-pressure and higher temperature service, nickel and certain alloys of nickel and copper are preferred. Most metals will react with NF3 at temperatures in excess of 300 c.是什么意思_For high-pressure and higher temperature service, nickel and certain alloys of nickel and copper are preferred. Most metals will react with NF3 at temperatures in excess of 300 c.在线翻译_英语_读音_用法_例句