gaseous medium短语¹⁴⁴⁹⁷²⁺² 基本例句 气体介质,气体 Color changing nonel tube, nitrogen, oxygen and vacuum system were used to study influence of gaseous medium inside nonel tube on its detonation propagation reliability. 利用变色塑料导爆管、氮气、氧气和真空系统对管腔内介质影响导爆管传爆可靠性做了研究。 cnki