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Kewei Liu
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[1]一种炮孔封堵装置
[2]一种静态爆破防冲孔装置
[3]VCR法炮孔孔底封堵器及封堵方法
[4]一种上向炮孔混装炸药装填装置
[5]一种炮孔封堵装置及方法
[6]一种爆破防冲孔装置炮孔堵塞方法
total6 1/1
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