macroaggregates造句

例句与造句

1. Surface horizons are usually characterized by roundish granular structure that exhibits a hierarchy in which relatively large macroaggregates ( 0.25 to 5 mm in diameter ) are composed of smaller microaggregates ( 2 to 250 祄 ).
2. It's difficult to find macroaggregates in a sentence. 用macroaggregates造句挺难的