ash specification

例句：

1. 1. The manufacturer'sash specification is very strict.
   制造商的灰烬规格非常严格。
2. 2. The newfurnace has a higher ash specificationthan the old one.
   新炉子的灰烬规格比旧炉子高。
3. 3. Theash specification of the coal isan important factor in determining its quality.
   煤的灰烬规格是决定其质量的重要因素。