The demolition described here is a chamber blasting which conducted for exploitation of stones within a limited time, under a strict requirement of high quality and low cost.
在时间紧、任务重、要求高、成本低的情况下，进行了一次以石料开采为目的的硐室爆破。
The demolition described here is a chamber blasting which conducted for exploitation of stones within a limited time, under a strict requirement of high quality and low cost.
在时间紧、任务重、要求高、成本低的情况下，进行了一次以石料开采为目的的硐室爆破。
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