3. Arsenic removal from upstream water is due to adsorption and precipitation of Sn on sediments, while dilution also plays an important role downstream. 上游水体中砷含量的降低主要是吸附沉淀作用,而溪流的简单稀释作用在下游也显得非常重要。
英英解释
n.
1. a diluted solution
2. weakening (reducing the concentration) by the addition of water or a thinner