Do not use HALON 1301, dry ammonium phosphate, or bicarbonate on NF3 fires because they produce toxic by-products.是什么意思_Do not use HALON 1301, dry ammonium phosphate, or bicarbonate on NF3 fires because they produce toxic by-products.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句