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综合分析出输水管道的破坏等级和破坏概率。
The damage degree and damage probability of the water pipeline have been worked out.
这样能保证地面建筑物处于一级破坏等级范围内，同时也能满足充填成本的要求。
In this way, not only the buildings on the surface can be ensured to be within the destruction range of Class 1 but also the requirement on the filling cost can be met.
对于带有掩体的油罐，其防护安全距离的确定应根据允许破坏等级、爆炸位置以及有掩体的两油罐间防护安全距离的计算来确定。
The protective safe clearance for a hidden tank shall be determined in accordance with the level of allowable destruction, location of explosion, and the safe clearance between two hidden tanks.
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