The propellant containing DDI possess the long pot time of slurry, high mechanical properties at low temperature and low burning rate pressure exponents (compared with IPDI).是什么意思_The propellant containing DDI possess the long pot time of slurry, high mechanical properties at low temperature and low burning rate pressure exponents (compared with IPDI).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句