方法: 再次氢化、酯化物高真空蒸馏 、 成盐后重结晶 、 酸性条件下水解 、 氧气破坏性氧化.
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A rapid survey of the theory of subsurface hydrology is presented in Chapters 1 and 2.
在第一、二两章中,我们介绍了地下水文学理论的概况.
词典精选例句
It has been clear for some time that the groundwater level at Giza is rising.
吉萨的地下水位呈上升趋势已不是一天两天的事了.
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Give an account of the history of the Crystal Palace in not more than 85 words.
用不超过85个单词的篇幅来讲述一下水晶宫的历史.
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In a word, it is realizable and effective in apply GA in groundwater management.
总之, 将GA法用于地下水资源管理是可行的和有效的,收到的效果令人满意.
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Surface subsidence ( ground depression ) caused by the overuse of ground water.
过度抽取地下水引起的地面沉降.
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Due to over pumping groundwater, hazard of mantled karst collapse may often take place there.
因过量抽取地下水, 造成覆盖型岩溶塌陷灾害.
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Take the manhole bag a purse that can hide valuables by unfolding to a sewer cover.
有[人孔盖提袋],摊开来就像下水道人孔盖,可以藏值钱的东西.
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重度盐碱地可开采高矿化地下水,生产芒硝和食盐.
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