二次处理;二级处理

secondary treatment的用法和样例：

例句

Sludge liquor is recirculated in the secondary system.污泥水回流到二级处理系统。
The ozonation characteristics and kinetics of secondary effluent from WWTP were studied.研究了城市污水厂二级处理出水的臭氧氧化特性及其动力学规律。

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牛津初中英语一年级

牛津初中英语二年级课文UNIT5

[00:08.59]What are you doing tomorrow,Eddie? [00:13.24]I am going birdwatching at the market. [00:17.50]At the market? [00:21.05]I like birds at the market.Beijing Ducks and roast chickens.Yummy! [00:29.83]Reading A Birds in Zhalong [00:40.28]Sandy j

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arguement51The following appeared in a medical newsletter. Doctors have long suspected that secondary infections may keep some patients from healing quickly after severe muscle strain. This hypothesis has now been proved by preliminary results of a s

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GRE作文

闭着眼睛飘单词四级词汇57

[0:0]scratch抓，刮，擦 [0:9.1942]screen screw script seal屏幕，银幕螺丝剧本，广播稿封条，图章 [0:46.5236]secondary sector secure segment次要的，第二的扇形，部门安全的，可靠的部分，断片 [1:34.3195]select selfish semester semiconductor选择，挑选

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闭着眼睛飘单词四级词汇

VOA标准英语2010-Starting AIDS Treatment Much Earlier May

Joe DeCapua 15 April 2010 Over the years, theres been debate over when to start HIV-positive patients on anti-retroviral drugs, or ARVs. At first the standard practice was to wait until a persons immune system had nearly collapsed. But a growing body

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60秒科学:Apnea Treatment Improves Golf Game

Apnea Treatment Improves Golf Game A study presented at CHEST 2009, the meeting of the American College of Chest Physicians, found that golfers with apnea who got treatment lowered their handicaps by as much as three strokes. Steve Mirsky reports The

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60秒科学

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anomic division of labour