optical density of smoke meaning in English

烟的密度烟的阻光度的量度

Test method for specific optical density of smoke generated by solid materials
固体材料产烟的比光密度试验方法
Test method for specific optical density of smoke generated by solid materials
通过固体材料对烟雾产生的特定视觉密度的试验方法
Standard test method for specific optical density of smoke generated by solid materials
由固体材料产生的烟雾的特定光密度标准试验方法
Method for measurement , in the laboratory , of the specific optical density of smoke generated by materials
材料生成烟雾的光学比密度的实验室测量方法