四于作业场所有引火性液体之蒸气或可燃性气体滞留，达爆炸下限值之百分之三十以上，致有立即发生爆炸、火灾危险之虞时。
When vapors of flammable liquid or combustible gas stagnate in job site , reaching 30% or more of the lower explosion limit, dangers such as explosion and fire may occur imminently;
用于扑救各类可燃液体、可燃气体、可燃蒸气、及电器设备等初起火灾，广泛用于油田、油库、液化气库、配变电站等场所。
BC dry powder fire apparatus is used to put out the early fire disasters from various kinds of combustible liquid, gas, steam; electrical equipments etc.
用于扑救各类可燃液体、可燃气体、可燃蒸气、及电器设备等初起火灾，广泛用于油田、油库、液化气库、配变电站等场所。
BC dry powder fire apparatus is used to put out the early fire disasters from various kinds of combustible liquid, gas, steam; electrical equipments etc.
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