As a result of nitrocellulose in need and want to join, such as ethyl acetate ester, n-butyl acetate.是什么意思_As a result of nitrocellulose in need and want to join, such as ethyl acetate ester, n-butyl acetate.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句