bottom ash

基本解释

The unique perimeter seal on the lower 140 degrees of the seat minimizes cavities that can collect bottom ash.
在阀座下部140度的独特的圆周密封设计结构最大限度减少可能淤积底灰的洞隙。
Experimental results identified that fluorine in coal belong to volatile elements, fluorine in fly ash and bottom ash were non rich.
结果表明：煤中氟属于强挥发性元素，在煤灰中是非浓集的。
Like definitions of fly ash ratio and bottom ash ratio, ash circulating ratio should be based on the amount of ash to furnace (including limestone).
它与飞灰份额、底灰份额的定义一样，都应以入炉灰量（含石灰石带入灰量）为基准。

That equates to the production of 140 million tons of coal in the form of fly ash, bottom ash, scrubber sludge and boiler slag.
FORBES: Obama May Soften Proposed Crackdown On Coal Ash Disposal

底灰
With the growth of incineration of MSW, the disposal of the increasing amount of bottom ash is becoming a new environmental issue.
由于固体废弃物焚烧比例日益提高,大量焚烧底灰的处理成为环境管理领域新的问题。
化学
底灰