coal powder granularity的用法和樣例：
例句
- The results of study have certain reference significance for determining optimal coal fineness required for re-burning.
研究結果對確定再燃所需要的最佳煤粉細度具有一定參考意義。 - The impact on the pozzolanic effect by the fineness of superfine slag powder is changed with content.
摻量不同，火山灰效應受礦渣微粉細度的影響也不同。
