lower limit of explosion 爆炸下限
explosion lower limit density 爆炸下限浓度
lower limit of explosion density 爆炸浓度下限
·2,447,543篇论文数据，部分数据来源于NoteExpress
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;
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。
youdao
应用推荐
模块上移
模块下移
不移动