查询词典 chlorine

In shallow well water disinfections effective 4～5％ chlorineout of mother liquor of chloro-trisodium phosphate is used,30 minutes later chlorine reach 0.6 to 0.8 mg per liter (0.6～0.8 ppm),this water reach the national sanitary standed of drinking water mother liquor of chloro-trisodium phosphate can be best described as nonpoisonous,no remainer,quick and kill bacterium with wide-range,no corrosion and fine stability,safe,reliable new bactericide.

在浅井水消毒中，用有效氯为4.0—5.0％的氯化磷酸三钠母液投放，有效氯达到0.6—0.8mg/升(0.6ppm—O.8ppm)作用30钟后，该水可完全达到国家饮用水卫生标准。氯化磷酸三钠母液是一种无毒、无残留、速效广谱杀菌，无腐蚀性、稳定性好、安全可靠的新型杀菌剂。

The hydroxyl group is usually ortho directing but in the case of salicylaldehyde, the chlorine stom enters para to the hydroxyl group and not in the other ortho position.

羟基通常是邻位的指挥羟基的帕拉和不是另一邻位的在自己的位置上但是氯stom在水杨醛的情况上登记。

Based on the shortcomings of the COD determination method revised in National Standard, some improvement measures of the standard method, including improvement of slaking phrases, research of substitution catalysts and elimination of chlorine ion disturbance, are compared and discussed. Afterwards, some common substitution COD determination methods, such as correlation coefficient analysis method, electrochemistry analysis method, spectrophotometric analysis method and flow inject analysis method, are introduced.

在论述了国标中COD标准方法不足之处的基础上，本文就标准方法的众多改进措施分类进行了比较与探讨，包括消解方法的改进、替代催化剂的研究以及氯离子干扰的消除，然后介绍了相关系数法、电化学法、分光光度法和流动注射法等COD测定替代技术。

XDJ-III is a compound disinfectant composed of the main agent with high chlorine and adjurant which has synergia syergism and corrosion mitigation effects.

XDJ-Ⅲ是以高氯制剂为主剂，配以增效、缓蚀、润湿及渗透作用的辅剂研制而成的新型复方消毒剂。

Volatile organic substances containing chlorine: tetracarp, carbon tetrachloride , trichloroethylene , chloroform, tetrachloroethane and etc.

挥发性含氯有机物：四氯乙烯、四氯化碳、三氯乙烯、氯仿、四氯乙烷等。

Alternatively, the chlorine-containing compound may comprise a compound selected from the group consisting of ammonium chloride, methyl ammonium chloride, tetramethylammonium chloride, tetraethylammonium chloride, and combinations thereof.

或者，所述含氯化合物可包括选自氯化铵、氯化甲基铵、氯化四甲基铵、氯化四乙基铵和它们的组合的化合物。

After exposure to 100 mg/L chlorine dioxide, ATP, Ca^＋＋ ion and K^＋ ion in the bacterial thalli leaked out obviously, but injury to nucleic acid was not significant.

结论核酸并不是二氧化氯杀菌时的靶位点，胞内物质的渗漏与细菌致死的联系并不十分明显，二氧化氯的杀菌机理可能在于对细胞质的凝集作用上。

In this study, new benzo[l,2,3]thiadiazole derivatives were designed according to relationship of structure and efficacy. The 9 novel compounds were synsthesized with following reactions. The chlorine atom in 2-chloro-3,5-dinitro-benzoic acid as beginning raw material was substituted by 2-methylpropane-2-thiol, esterified then with bromoethane, reduced by iron powder and cyclized to obtain ethyl benzo[l,2,3]thiadiazole-7 after diazonation reation.

本论文根据苯并噻二唑诱导剂的构效关系设计了新的苯并噻二唑的结构，并合成了9个未见文献报道的化合物，合成步骤如下：采用2-氯-3，5-二硝基苯甲酸为起始原料，苯环上的氯原子被叔丁基硫醇置换，羧酸由溴乙烷酯化，硝基由铁粉还原，随后经重氮化关环生成苯并[1，2，3]噻二唑-7-羧酸乙酯。

The 2002 edition of "Hygienic Standard for Cosmetics" in the provisions of banned cosmetics has 496 kinds of chemical substances, while the 2007 version by the new and change, a total of 1286 kinds of banned chemicals, including chlorine acetaldehyde, chlorinated methane, trichloro toluene.

在&2002年版卫生标准的化妆品禁止在化妆品的规定&的496种化学物质，而新的变化，但一千二百八十六种禁止化学品，包括氯乙醛，氯化甲烷，三氯共2007版甲苯。

Any chlorine residues in the water may react with organic compounds to form harmful by-products such as trichloromethane that are difficult to remove and are known to be cancerous.

再者，水中的有机物质与氯产生化学反应后会形成有害化合物，如三卤甲烷，这些难以清除的化合物更被确定为致癌物质。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48