double base短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 双元,双料,双支承 The action mechanism of an organic matter to double base system propellant was discussed in this paper. The effect of this matter to combustion performance was studied by a series of experiments. 探讨了某有机化合物在双基系推进剂吸收工艺中的作用机理，用一系列实验研究了此工艺助剂对推进剂燃烧性能的影响。 cnki