For this method, it is important that the entire burning surface of the grain ignite simultaneously.
对于这种方法，这是非常重要的整个燃烧表面的粮食同时点燃。
The area calculating formulas of burning surface and channel section have been derived by the grain geometry.
根据装药几何形状，导出了在火箭发动机工作过程中燃烧面积及通道截面积变化规律的计算公式。
The area calculating formulas of burning surface and channel section have been derived by the grain geometry.
根据装药几何形状，导出了在火箭发动机工作过程中燃烧面积及通道截面积变化规律的计算公式。
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