省料孔
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Improve stemming quality. By stemming the shot holes with machine-processed stem-soil, the explosive energy utilization ratio rises and 10% explosive are saved.
改善堵塞质量，通过采用机械加工的炮泥堵塞孔口，使爆炸能量利用率提高，节省了10 %的炸药消耗。
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