短語詞組短語protective hydrogen atmosphere 氫保護氣氛protective furnace atmosphere [熱]爐腔保護空氣層protective atmosphere tempering 保護氣體儲罐protective atmosphere gas storage 保護氣體儲罐protective atmosphere generation system 保護氣氛發(fā)生裝置nitrogen base protective atmosphere 氮基保護氣氛protective atmosphere equipment [冶]保護氣氛供應(yīng)設(shè)備ammonia dissolution protective atmosphere 氨分解保護氣氛protective atmosphere casting 保護澆注 返回 protective atmosphere