Controlled blasting is extremely important to prevent the harm.
爆破时控制预防其危害极其重要。
Short delay controlled blasting technology for deep hole loose is presented in this paper.
本文简要介绍了深孔松动微差控制爆破技术。
Short delay controlled blasting technology for deep hole loose is presented in this paper.
本文简要介绍了深孔松动微差控制爆破技术。
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