这句话中的enrichment和significant的搭配合理吗？Among these mechanisms the effect of microbial selection on sludge granulation could be demonstrated by the fact that the enrichment of specific microbial groups was

搭配合理。在这句话中，enrichment和significant的搭配合理，因为enrichment表示"富集"，significant表示"显著的"。因此，enrichment of specific microbial groups是指特定微生物群体的富集，而更significant则表示随着GS（颗粒污泥）尺寸的增加，这种富集是更加显著的。