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The dissolved oxygen had greater effects on heterotrophic bacteria,ammonifying bacteria and nitrifying bacteria.

溶解氧对异养细菌、氨化细菌、细菌有较大影响。

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Biological powdered activated carbon enhanced the growth of nitrifier by absorbed toxic or inhibitory substance.

生物活性炭吸附了对菌产生毒性和抑制的物质、强化了菌在炭表面的生长。

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To increase the precision of the electric igniting parameters of common fusehead, a kind of wrapper such as NC or CMC,can be used to wrap the bridge wire in common fuse head .

为了提高普通点火头发火参数的精度,可以在桥丝上涂覆一层甲基纤维素的涂层。

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The isomer ratio of o-MNT to p-MNT,the degree of dinitration and the ratio of 2,6-DNT to 2,4-DNT have been investigated in the mononitration product of toluene by mixed acid.

通过改变反应条件,究了硫混酸剂对甲苯一段产物的邻对异构体比例、二程度及2,6-二基甲苯与2,4-二基甲苯生成比例的影响。

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It also showed that more than one week was needed to activate Nitrosomonas by daily addition of 1.5 g NH4Cl and another 50 ml nitrifying bacteria to this system.

继续添加1.5克氯化铵和50毫升细菌液,需要一星期活化亚酸菌。

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This paper presents the studies on the reaction form of urea or nitrourea which condenses with nitrolysis fragments of urotropine to form Keto-RDX in nitrating agents.

通过改变加料方究脲基脲在剂中与乌洛托品解碎片进行缩合反应的形

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The most common method of biological nitrogen removal is by combining the nitrification of the autotrophic nitrobacter and nitrosomonas with the denitrification of heterotrophic denitrifying bacteria.

生物除氮最常利用的是将自营性酸菌、亚酸菌之作用与异营性脱菌之脱作用结合。

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Nitro 1,2,4 triazole 5 one(NTO)can be obtained by nitrating 1,2,4 triazole 3 one (TO) under different conditions,and nitrobenzyl derivatives of TO are prepared as well.

究了1,2,4三唑酮3(TO)衍生物的合成,结果表明TO在多种条件下均可制得3基1,2,4三唑酮5(NTO),同时还合成了TO的二取代基苯衍生物。

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The nitrocellulose produced by this method is EXPLOSIVE and can deflagrate or even detonate violently on shock, friction, or spark when dry.

纤维素被生产以这个方法是易爆的, 可能猛烈地迅速燃烧甚至起爆在震动、摩擦, 火花当干燥。

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The development and application of organosilicone modifying acrylic resin,polyurthane,nitrocotton and casein etc. in leather chemical materials at home and abroad are introduced.

介绍了国内外有机硅改性丙烯酸树脂、有机硅改性聚氨酯、有机硅改性、有机硅改性酪素等在皮化材料中的发展及应用情况。

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If the wastewater concentration was too high, it would stimulate fungus, aminate bacteria, denitrifying bacteria and some anaerobic bacteria to propagate.

污水浓度过大,会刺激土壤中真菌、氨化细菌、反细菌及一些厌气性菌的繁殖。

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Short rod bacteria and spirillum were dominant in the denitrifying reactor.While cocci were the dominant bacteria in the nitrifying reactor.

于脱槽中是以短杆菌和弯曲杆菌为优势菌,而于槽中则是以球菌为主要的优势菌。

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Correlation of nitrotyrosine and glutathione peroxidase with age, sex, body mass index, blood pressure, glycometabolism and lipometabolism was analyzed.

分析酪氨酸及谷胱甘肽过氧化物酶与年龄、性别、体质量指数、血压、糖代谢、脂代谢等指标的相关性。

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Amino phthalhydrazide was synthesized from phthalic anhydride by four steps of nitrationidehydration, hydrazinolysis and reduction reactions in this paper.

以邻苯二甲酸酐为原料,经、脱水、肼化、还原等步骤合成了3-氨基邻苯二甲酰肼。

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A reference material for calibrating and verifying the calorimeter of propellant explosion heat is composed of nitrocellulose(NC),nitroglycerine(NG),centralite and vaseline.

采用甘油、中定剂和凡士林为火药爆热热量计检定用标准物质的组成成分,通过生产工艺优化制备出该标准物质。

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Mathematical model about injection nitrator producing nitroglycerine is founded and several assumptions are put forth in this paper.

对喷射器生产甘油进行了模拟计算。

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Nitroglycerin is obtained by nitrating glycerol.

甘油是经过丙三醇得的。

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Because of that, it tightly controls this nitrifying bacteria function in the soil.

抗生素抑制了细菌在土壤里的活动。

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商界名人的传奇故事

Alfred's next challenge was to find a safe way to detonate nitroglycerin.

阿尔弗雷德的下一个找到引爆甘油的安全方法。

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WIL生活启示录

A Chemist and Biochemist who has published relevant research in several journals like the American Journal of Physiology, Dr. Mark Miller, says that nitrate and nitrite are not nitrosating species, that is, these molecules cannot directly form cancer causing nitrosamines.

在《美国生理学杂志》等期刊上发表过相关研究的学家和生物学家马克·米勒博士说,酸盐和亚酸盐不物质,也就说,这些分子不能直接形成致癌的亚胺。

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冷知识历史趣谈

Thanks to his former life as a miner, McCurdy acted as the demolitions expert to his little posse, using nitroglycerin basically any time he had the faintest excuse to do so.

由于他之前当过矿工,麦柯迪成了小团伙中的爆破专家,只要有一丁点借,他就会用甘油。

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For example, the heart medicine nitroglycerine becomes unstable at high heat and is known to lose its potency fast.

例如,心脏病药物甘油在高温下不稳定,且它的效力会迅速丧失。

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实用急救课堂

Say, if they have a Nitroglycerine tabs or a spray and they can't get up to get it.

比如说,如果他们有甘油标签或喷雾,他们不能起床去拿。

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VOA Special 2017年2月合集

The digestive bacteria in a cow's stomach causes the animal to expel the gas through its mouth.

牛类胃部的细菌会引起牛类通过打嗝从腔释放甲烷气体。

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These antibiotics are specifically directed to this little bacteria, we say the nitrifying bacteria.

这种抗生素会直达一种小小的细菌,”细菌。

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商界名人的传奇故事

When nitroglycerin was poured onto the soil, it turned it into a doughy consistency.

甘油倒在土壤上时,它变成了面团状。

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Nobel named his creation dynamite, and it turned out that the ingredient that made a deadly explosive had another life-saving property, hinted at when workers in dynamite factories noticed that coming into contact with nitroglycerine seemed to ease chest pains.

诺贝尔将他的发明命名为炸药,事实证明,制造致命炸药的成分具有另一种拯救生命的特性,炸药工厂的工人注意到,接触甘油似乎可以缓解胸痛。

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冷知识历史趣谈

Gotta blast the thing open, except I guess the excitement kind of got to him, because he ended up using like way too much nitroglycerin, like inordinate amounts, ended up completely destroying the safe and its contents.

他要把保险箱炸开,不过我猜他兴奋过头了,因为他最后用了太多甘油,真的非常非常多,最终彻底毁坏了保险箱和箱子内部的东西。

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By the middle of the century, American entrepreneurs discovered that dipping nitrocellulose in wax turned it into a hard, enduring substance, and patented it as celluloid.

到本世纪中叶,美国企业家发现将纤维素浸入蜡中会使其成为一种坚硬耐用的物质,并将其申请了赛璐珞专利。

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商界名人的传奇故事

In between overseeing his manufacturing empire, Immanuel found time to collaborate with Alfred on the nitroglycerine problem.

在管理他的制造帝国之余,以马内利抽出时间与阿尔弗雷德在甘油问题上合作。

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A vat of nitroglycerin had been overheated.

一桶甘油过热。

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Now, suddenly, nitroglycerin was a viable explosive.

突然间,甘油成了一种可行的炸药。

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商界名人的传奇故事

Nobel also met a chemist by the name of Jules Pelouze, who was fascinated with nitroglycerin and had a determination to bring it under control.

诺贝尔还遇到了一位名叫朱尔斯·佩鲁兹的学家,他对甘油很着迷,并决心控制住它。

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商界名人的传奇故事

When I think of all the victims killed during nitroglycerine explosions, and the terrible havoc that it has wreaked, which in all probability will continue to occur in the future, I am almost ashamed to admit to being its discoverer.

当我想到所有在甘油爆炸中丧生的受害者,以及它所造成的可怕的破坏,这种破坏将来很可能还会继续发生时,我几乎羞于承认自己它的发明者。

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SciShow - Chemistry

What exactly nitroglycerine does to the circulatory system remained a mystery for a long time.

甘油对循环系统具体起到什么作用,长期以来一直个谜。

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HISTORY This Week

But could the men have picked up nitrocellulose on the train?

那么,这些人否可能在火车上接触到了纤维呢?

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Science Fiction - Daily Short Stories

Gunpowder, the printing press, nitroglycerin, the atom bomb—they were all supposed to destroy the race.

火药、印刷机、甘油、原子弹——它们原本都被认为会毁灭人类。

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