本文针对小型子母式催泪弹，采用经典弹道理论建立了高低压室发射方式的内外弹道数学模型。
Based on conventional ballistics theory, the mathematical model of the ballistic trajectory which adopts low and high pressure chamber fire mode is established for the small cluster tear bomb.
针对高低压室发射系统结构特点，采用数值模拟与试验相结合的方法对其内弹道特性进行了研究。
According to the structure characteristics of high-low pressure chamber launcher, the interior ballistics of launcher is discussed by using the numerical simulation and experimentation.
介绍了攀钢密地选矿厂阶磨阶选改造中的高低压供配电设计及改造，提出了避免电源交叉及分开设立低压室的措施。
This paper introduced the design and reform of high and low electric distribution in stage grinding and dressing of Pangang Midi Concentrator.
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