explosiveconcentration是什么意思

用法例句

Discussion on the electrical design and selecting of dangerous explosion place;

浅谈爆炸危险性场所的电气设备选型

The similarities and differences of explosion characteristic between the gas explosion in coal lane and in elongated buildings;

煤矿瓦斯爆炸与超长建筑物爆炸泄压的异同点

Analyzing and evaluation of explosion fatalness in leaching oil plant;

浸出油厂的火灾爆炸危险性分析与评价