Use: it is adequate for senior airproof material and fire retardant in fire control.and worm powder use in battery,deadening,heat preservation.是什么意思_Use: it is adequate for senior airproof material and fire retardant in fire control.and worm powder use in battery,deadening,heat preservation.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句