A huge amount of hydrogen cyanide pernicious gas escaped from PAN-basis carbon fiber manufacturing.People has paid attention to its harmfulness to plant and environment.是什么意思_A huge amount of hydrogen cyanide pernicious gas escaped from PAN-basis carbon fiber manufacturing.People has paid attention to its harmfulness to plant and environment.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句