humic matter

• 腐殖质

humic matter的用法和样例：

例句

1. Humic substances are known to coat membrane filters.
   腐殖质是已知能够覆盖滤膜的物质。
2. The final process in organic matter decomposition is known as humification.
   有机物分解的最后程序称为腐殖质化。