By experimenting in the laboratory, the effects of natural organic matter on both oxidative and coagulation removal of iron from groundwater were researched.
通过实验室试验，全面考察了自然有机物对地下水化学氧化及混凝除铁的影响。
Petroleum, consisting of crude oil and natural gas, seems to originate from organic matter in marine sediment.
石油由原油和天然气组成，它们似乎来源于海洋沉积物中的有机物质。
Natural alga, humus and several of organic matter which has balanced nutrients and contain many microelements are the component of this product.
本品原料选自营养均衡的天然海藻、腐殖质和各类有机质，含有多种微量元素。
Organic matter in the two gas-source rocks may form various kinds of natural gas by pyrolysis in different geological conditions.
两种气源岩中的有机质在不同地质条件下热解，形成不同类型的天然气。
This natural environment is a far cry from the typical urban landscape with heavy clay soil that is poorly aerated, poorly drained, and almost completely lacking in organic matter.
自然环境与有着粘性土质典型的城市风景带完全不同，鲜有空气进入，排水差，有机养料奇缺。
The Major natural sources of atmospheric methane include enteric fermentation in ruminants and some insects, and the anaerobic decomposition of organic matter in waterlogged soils.
甲烷的主要自然源包括反刍动物和一些昆虫的肠发酵及淹水土壤的有机物的厌氧分解。
Under natural conditions, lakes, rivers, and other water bodies undergo Eutrophication, an aging process that slowly fills in the water body with sediment and organic matter.
在自然条件下，湖泊，河流，和其他水体进行水体富营养化，老龄化的进程，慢慢地填满了水体与沉积物和有机物。
Under natural conditions, lakes, rivers, and other water bodies undergo Eutrophication, an aging process that slowly fills in the water body with sediment and organic matter.
在自然条件下，湖泊，河流，和其他水体进行水体富营养化，老龄化的进程，慢慢地填满了水体与沉积物和有机物。
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