同根派生 humic substance相关词英汉例句Humic substances are known to coat membrane filters.腐殖質是已知能夠覆蓋濾膜的物質。Soil humic substance is an important natural pool of THM precursors in raw waters.土壤腐殖質是水源三鹵甲烷前敺物質的重要天然來源。humic substance更多例句