地下煤矿的防爆和保护。保护系统。第2部分：钝态水槽屏障物。
Explosion prevention and protection in underground mines - Protective systems - Part 2: passive water trough barriers.
介绍了石油库爆炸危险区域的划分、爆炸性混合物的分级分组、防爆电气设备的种类和特点。
Division of explosive hazardous areas, classification of explosive compounds, characteristics and types of explosive-proof equipment are analyzed.
这些建筑物周围的许多防爆都倒塌了。
Many of the protective blast walls surrounding those buildings collapsed.
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