Discussing the harmful effect of blasting controlled on the ground to persons and objects. And offering the ways how to prevent it.
讨论了地面控制爆破对人、物的有害效应，并提出了控制爆破的安全与防护措施。
Controlled blasting is extremely important to prevent the harm.
爆破时控制预防其危害极其重要。
Controlled blasting is extremely important to prevent the harm.
爆破时控制预防其危害极其重要。
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