• 比较了乙酰乙酰溴中间体硝基安定收率影响

    The effect of chloroacetyl chloride and bromoacetyl bromide on yields of intermediates and nitrazepam was compared.

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  • 我们得到能量通过结合在一起。

    We see that we get a negative energy by attaching the chloride to the sodium.

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  • 没有有机残渣留下橡胶使沈积。

    Leaves neoprene articles free of organic residue, Chlorine and salt deposits.

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  • 介绍了离子烧碱装置空气除脱真空工艺

    The dechlorination process by air purge and vacuum in ionic membrane caustic soda units were introduced.

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  • 摘要乙烯乙烯催化剂取代反应制成。

    Abstract: Polyvinyl chloride can be made by ethylene, chlorine and catalyst through substitution reaction.

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  • 主要研究二氧化双氧水湿面条保鲜方面作用

    The effect of chlorine dioxide and hydrogen peroxide on the shelf life of wet raw noodle was investigated.

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  • 应该使用自来水水箱因为自来水中含有氟化物

    You should not use tap water for the tank, because tap water contains chlorine and fluoride.

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  • 将军的性质与类似引起肺部呼吸道疾病

    Hydrazine is similar to chlorine or ammonia in that it affects the lungs and breathing tissue, the general said.

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  • 提供了一种消毒水方法生产二氧化消毒水的设备

    A method of disinfecting water, and apparatus for making chlorine dioxide and for disinfecting water also are provided.

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  • 同时,还改进了对甲苯对甲苯酰甘氨酸合成方法

    The improved methods for the syntheses of tolylsulfonyl chloride and Np-tolysulfonyl amino acids have been described in this work.

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  • 主要苯甲酰苯酚制备苯甲酸苯酯,然后重排、醚化所得

    It is based on phenol benzoate which is made from benzoyl chloride and phenol through rearrangement and etherification.

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  • 将油酸酰谷氨酸碱性溶液中反应制备了N-油酰基谷氨酸。

    N-oleoylglutamic acid was prepared from glutamic acid and oleoyl chloride in alkali solution and its structure was characterized by IR.

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  • (典型烷烃)几个全部取代而生成化合物

    Compounds formed when some or all of the hydrogen atoms in a hydrocarbon (typically an alkane) have been replaced with chlorine and fluorine.

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  • 不同时间测定血浆渗透压、血钠、血钾、血动脉血气。

    Blood samples were taken at eight different time intervals to measure plasma osmotic pressure, serum electrolytes and arterial gas analysis.

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  • 提出采用燃烧氧化偶联离子色谱法测定甲醇碳黑中的含量

    A new method has been developed to determine chlorine and sulfur content in methanol and charcoal by using combustion oxidation coupled to ion chromatography.

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  • 通过分离聚合物表明标记的接触样品表面探测到了

    Using separate pieces of fluorine- and silicon-containing polymers allowed the authors to show that signals consistent with the presence of fluorine were detected in the silicon sample after contact.

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  • 这些惰性物质包括:等元素,生产影响显而易见的。

    The inert deposits include silicon, calcium, Cl and K and their influence on production is obvious.

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  • 本文二氧化臭氧消毒机理氧化消毒特性经济性等方面进行介绍分析

    In this paper, the mechanism of chlorine dioxide and ozone disinfection, oxidation and disinfection and features are introduced and analyzed.

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  • 催化烷基反应其中甲烷苯反应得到5倍量单一产物二苯甲烷。

    This system also can catalyze the reaction of benzene with alkyl chloride, in which only the desired diphenylmethane is isolated in good yield (5 equiv. ).

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  • 为了满足人们水质不断要求二氧化臭氧今后处理中的主要应用方向

    In order to satisfy the constant demands on water quality, chlorine dioxide and ozone water treatment are the main application directions in the future.

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  • 检查流量计压力表其他记录仪器测量输出水平消费水平细菌含量水平。

    Read flow meters, gauges and other recording instruments to measure water output and consumption levels, bacterial content, chlorine and fluoride levels.

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  • 探讨了硬脂酰单宁酸量比催化剂对甲苯磺酸的用量、反应温度溶剂对合成影响

    The main factors affecting the reaction such as ratio of reactants, the catalyst (p toluenesulfonic acid), temperature and solvent were discussed.

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  • 一般说来,引发剂卤化物组份活性,是随同一原子上的原子数目增多而增长

    In general, the activity of the halide component of the initiator increases with the number of chlorine or bromine atoms joined to a single carbon atom.

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  • 游泳池海滩使用可以帮助消除头发身体残留物,然后将系列的护发素涂抹于头发。

    May be used after a day at the pool or the beach to help remove chlorine and salt residues from hair and body; follow with our hair conditioner that can be left in for extra conditioning.

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  • 生物量微生物耗氧速率影响方面,考察盐水氨水四种除活性炭微生物的影响。

    The influences of dosing medicaments, such as brine, ammonia water, chlorine and chloramines, on microorganisms of activated carbon were investigated by means of biomass and OUR.

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  • 由丁酰反应,以廉价氧化钙碳酸钠为复合束酸剂,合成香料丁酸糠醇酯,并用IR、GC进行了表征

    Using sodium carbonate and calcium oxide as cheap acid-capturer, perfume furfuryl butyrate was synthesized from furfuryl alcohol and butyryl chloride, and was characterized by GC and IR.

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  • 一个保养得好的游泳池足够剂量其他消毒剂杀灭致病菌,纽约大学兰格恩医学中心的临床微生物免疫学主任,Philip J.

    A well-maintained swimming pool uses the appropriate amount of chlorine and other disinfectants to kill bacteria which cause illness, explained Dr.

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  • 科学家们认为人类造成臭氧层破坏的主要原因一些化学物质,碳,它们到达平流层后会分解,然后臭氧发生化学反应从而破坏臭氧层。

    The problem with the ozone layer is that when certain chemicals, like chlorofluorocarbons, reach the stratosphere, they break down into chlorine and bromine, which react with the ozone and destroy it.

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  • 科学家们认为人类造成臭氧层破坏的主要原因一些化学物质,碳,它们到达平流层后会分解,然后臭氧发生化学反应从而破坏臭氧层。

    The problem with the ozone layer is that when certain chemicals, like chlorofluorocarbons, reach the stratosphere, they break down into chlorine and bromine, which react with the ozone and destroy it.

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