General motion low of back-pressure ports position is developed by solving thermodynamic model of compressor and carrying out dynamical computation.
通过求解压缩机热力学模型和进行动力计算，分析了背压孔的一般运动规律。
It is derived that general throwing motion formula and model parameters in which we take headlamp glass splinter as an example.
以汽车大灯玻璃碎片为例，给出了广义抛物运动抛距方程的参数。
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