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Microbiological nitrification and denitrification were considered to be the major sources of N2O in wastewater treatment processes.

微生物的硝化及反硝化过程为污水处理过程中N2O的主要产生源。

RK Mac Master, NCE , XIII; TF O'Dea, International Encyclopedia of the Social Sciences, XIV; HR Niebuhr, Encyclopedia of Social Sciences, XIII, and The Social Sources of Denominationalism; WJ Warner, A Dictionary of the Social Sciences; WJ Whalen, NCE , XIII; WT Whitley, HERE , XI; E Troeltsch, The Social Teachings of the Christian Churches; BR Wilson, Sects and Society: A Sociological Study of the Elim Tabernacle, Christian Science, and Christadelphians; J Wilson, Religion in American Society: The Effective Presence; JM Yinger, Religion in the Struggle for Power.

公园的Mac硕士，竞争性考试，十三；因子O'Dea ，国际百科全书社会科学，十四；人力资源尼布尔，百科全书社会科学，十三，社会来源Denominationalism ； WJ通讯公司华纳，词典社会科学； WJ通讯公司惠伦，竞争性考试，十三；野生惠特利，在这里，十一；电子邮件Troeltsch ，社会教基督教；溴威尔逊，教派和社会：社会学研究琳幕，基督教科学和Christadelphians ； J威尔逊，宗教美国社会：有效存在； JM英格尔，宗教的权力斗争。

American dentists are now warning that you should not buy teeth whiteners or bleaches over the Internet or from other over-the-counter sources without first talking to your dentist or dental hygienist.

美国牙医发出警告，人们不应该在与牙医协商前，通过互联网或者在没有医生处方的情况下购买牙齿美白产品或漂白剂。

The distribution of odor point sources in Qige WWTP was analyzed,the basic principle of soil deodorization was introduced,and some experience in operation and management of the soil deodorization system was summarized.

分析了杭州七格污水处理厂的臭气点源分布，介绍了土壤除臭的基本原理，总结了土壤除臭系统运行与管理的一些经验。

What follows is an attempt at a practical exemplification in a new direction of the aid derivable from these sources in the task of unveiling the past.

接下来是一个在揭示过去的任务中可以从这些资源获得的帮助的新方向上，一个实际例证的尝试。

These are natural products that are derived from various sources.

这些都是天然产品，是来自各种来源。

For a long period of time, widely used in the production of components of an effective insecticide rotenone is mainly from the genus Derris root extract, collect rotenone from the root to dig down to two meters deep, the human cost of not only high-cost and easy caused by soil erosion, many of the genus Derris production has stopped growing, leading to the market with rotenone as the main active ingredient of the biological pesticide manufacturers shortage of raw material sources.

相当长一段时间，在生产上广泛使用的有效杀虫成分鱼藤酮主要是从鱼藤属植物中的根部提取，采集鱼藤酮的根要挖掘至地下达两米深，不仅人力成本耗费高，而且容易造成水土流失，不少鱼藤属植物的产区已经停止种植，导致市场上以鱼藤酮为主要活性成分的生物农药制造企业原料来源短缺。

Any of various usually woody vines of the genus Derris of tropical Asia whose roots yield the insecticide rotenone; several are sources of native fish and arrow poisons.

热带亚洲鱼藤属的任何一种木质藤本植物，其根产出一种属于杀虫物质的鱼藤酮；该属有几种植物当地用作鱼毒和箭毒的原料。

Nowadays, while quality of student sources descending and difference of their culture base adding, the teaching model of curriculum is still as same as the past in middle medical school.

目前，中等卫生学校生源质量普遍下降，生源的文化基础存在较大差异，而课程的教学仍采用大一统教学模式。

These leds light sources are not only adjustment and uniformity but also smaller , less expensive , required less power , generated less heat . especially , the pattern of the construct both aggregate and desegregate in design was to realize different light intensity illumination on same biology sample at the same time . the selectivity , work efficiency and experiment veracity have been improve greatly

该系列光源除了具备光强可调、分布均匀优势外，还具有波长、波峰宽适宜，以及小巧、价廉、能耗低、发热少等特点，尤其是该生物光源在设计时采用的单元组装模式，使得不同强度的光照能够在同一批生物样品上实现，大大拓宽了生物实验的可选择性，提高了工作效率和实验准确性。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。