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Patents

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李振雷, 何生全, 田向辉, 何学秋, 宋大钊. 一种爆破孔和大直径钻孔耦合卸压防治冲击地压的方法. 2018104899791

Release time:2022-04-04 Hits:

Service Invention or Not:  no

Pre One:李振雷, 何生全, 田向辉, 何学秋, 宋大钊. 一种双开式标准型煤试件制作模具. 2018104106639

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