The formula and properties of composite gas generating propellant AP/DHG/CTPB were investigated. The burning property of the composite gas generating propellant was determined.是什么意思_The formula and properties of composite gas generating propellant AP/DHG/CTPB were investigated. The burning property of the composite gas generating propellant was determined.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句