底质是矿物、岩石、土壤的自然侵蚀产物,生物活动及降解有机质等过程的产物,污水排出物和河(湖)床底母质等随水迁移而沉积在水体底部的堆积物质的统称。一般不包括工厂废水沉积物及废水处理厂污泥。底质是水体的重要组成部分。
n. substrate
misc. bottom material
... bottom character 底质 bottom characteristics 底质 bottom chart recorder 海底地貌记录仪 ...
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... 底质bottom characteristics 底质quality of the bottom 底质采样bottom characteristics sampling ...
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沉水植物是水体中磷在上覆水与底质中分配的重要影响因素。
Submerge plant was an importance factor that affected the distribution of phosphorus between overlying water and sediment.
苏格拉底质疑这种盲目的服从,并且将其上升到了思想体系层面。
通过野外调查研究和室内模拟试验,研究了宫厅水库底质中砷的污染。
Pollution of arsenic in bottom sediment of Guantin reservoir has been studied by field investigation and simulation test.
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