R-occurs when stemming material is inefficient or insufficient. Rifling is driven by the stemming release pulse for airblast – Chinese translation

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R-occurs when stemming material is inefficient or insufficient. Rifling is driven by the stemming release pulse SRP for airblast

炮泥不足时会出现螺纹线。由于空气冲击波、螺纹线是由炮泥释放脉冲形成的

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