principle of waste water purification
英
美
- 污水净化原理
双语例句
- The cleaning principle of sapphire wafers is discussed.
论述了蓝宝石晶片的净化原理。 - The purification mechanisms,kinds and activations of rare earth catalysts were reviewed.
综述了稀土催化剂净化汽车尾气的净化原理，催化剂的种类及催化活性。
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