从南极永久性积雪空气分析大气卤烃的历史：甲基溴化物，甲基氯化物，氯仿和二氯甲。
Atmospheric histories of halocarbons from analysis of Antarctic firn air: methyl bromide, methyl chloride, chloroform, and dichloromethane.
已经证明，手印、卤烃油和机油的存在会大大降低包括不锈钢和镍在内的金属的抗温度能力。
The presence of fingerprints, halocarbon oils, and machine oils have been shown to significantly reduce the temperature resistance of metals, including stainless steel and nickel.
现在含氯氟烃还存在着黑市交易。在巴西、印度和墨西哥等国家，卤烃的生产依旧有增无减。
There is still a black market in CFCs, and halon production has increased in countries such as Brazil, India and Mexico.
当分析其它气体中的其它杂质如卤代烃时，可以使用其它检测器。
Other detectors can be used when analyzing other impurities such as halocarbons in other gases.
挥发性卤代烃是大气中的痕量气体，对臭氧层损耗和温室效应有重要作用。
Volatile halocarbons are important atmospheric trace gases, which play significant roles in stratospheric ozone depletion and in the greenhouse effect.
试验结果表明，上述底物用这种新方法进行羰基合成，反应的选择性好，其中烯烃和卤代烃的收率也较高。
The results have shown that the selectivities are good for all substrates and the yields are satisfactory for olefins and halides in this way.
卤代烃是一类重要的有机化合物，在化学工业、农业、材料、环保及现代有机合成中有着广泛的应用。
Halohydrocarbon is one of the most important organic compounds and widely used in chemical industry, agriculture, material, environmental protection and modern organic synthesis.
卤代烃是一类高效金属除油清洗剂。
本文对某市几个自来水厂不同季节原水、出厂水和未梢水中腐殖酸、卤代烃及挥发性有机物的含量进行了测定。
The measurement of humic acid, trihalom- ethanes and nonvolatile organic compounds in raw water, chlorinating water and tip water of several waterworks were carry out in two dis- tinct seasons.
经过筛选确定苯系物、多环芳烃、有机氯农药、多氯联苯和挥发性卤代烃为主要污染物。
The main pollutants are benzene serial materials, polycyclic aromatic hydrocarbon, organochlorine insecticide, PCB and volatile halogenated hydrocarbon.
从人类活动中释放出来的物质(包括氟氯烃和卤代烷哈龙)同臭氧层中的臭氧分子发生化学变化，导致其破坏。
The destruction of ozone molecules in the ozone layer by chemical reaction with materials released from human activities, including chlorofluorocarbons and halons.
制备1 -溴丁烷是有机化学实验中的一个具有代表性的卤代烃合成实验。
Preparation of 1-bromo-butane experiments in organic chemistry are a representative experiment halohydrocarbon synthesis.
北极地区大气中活性卤素物种主要来自海洋大型藻类释放的卤代烃分解和海盐的贡献。
The source of RHS mainly comes from the photochemical degradation of volatile halogenated organic compounds (VHOC) emission from marine macroalgae and inorganic halogen species from sea salts.
饮用水；挥发性卤代烃；氯仿；四氯化碳。
Study on the levels of volatile halogenerated hydrocarbon in drinking water in Linyi City.
本文报导了用多种不同的钛催化体系对卤代烃进行还原反应的结果。
Reduction of organic halides catalyzed by various titanium compounds has been studied.
建立顶空-毛细管气相色谱快速分析饮用水中多种挥发性卤代烃的方法。
Volatile halogenated hydrocarbons in drinking water were determined by headspace gas chromatography.
卤原子作为炔烃三键活化基团和定位基，炔烃三键发生亲电加成反应；
This type of reaction has signicant advantages, the alkyne proceeds the coupling reaction with the halogen atom as the leaving group.
根据脂肪烃、多卤联苯、卤代苯和稠环芳烃等80种非极性有机化合物在鱼体中生物富集因子（BCF）的实测数据，建立了有机物在鱼体中生物富集因子的片段常数法估算模型。
Relationship between bioconcentration factor and fragment constants was investigated. A prediction model was developed on the basis of the observed BCF values of 80 non-polar organic compounds.
防火。灭火介质。卤代烃。第1部分：聚四氟乙烯1211和聚四氟乙烯1301规范。
Fire protection. Fire extinguishing media. Halogenated hydrocarbons. Part 1: specification for halon 1211 and halon 1301.
本发明不含苯类、酚类芳烃，卤代烃等有毒溶剂，以水为溶剂。
The cleaning agent USES water as a solvent instead of toxic solvent such as benzenes, phenol aromatic hydrocarbons and halogenated hydrocarbon.
通过空气毒物卤代烃化合物， 对双柱智能定性方法进行了验证。
Some halohydrocarbons specified as toxic compounds in air are analyzed as verification of the method.
研究证明，卤代烃、氯仿含量与水温变化及沸腾持续时间长短密切相关。
Researchs proves that the content of halohydrocarbon and chloroform closely relate to the variety of water temperature and the boiling duration.
本发明公开了一种催化氢气还原卤代烃脱卤制备烃的方法。
The present invention discloses catalyzed hydrogen reduction process of alkyl halide to dehaloginate and produce hydrocarbon.
该催化剂适用于气相氟化卤代烃制备氢氟烃和氢氟氯烃。
The catalyst is applicable to preparation of hydroflurocarbon and hydrogenous fluorochlorohydrocarbon with gas-phase fluorinated halohydrocarbon.
以喹啉为母体，配以有机胺和芳香族化合物，与卤代烃反应合成了一种复合缓蚀剂。
A complex corrosion inhibitor has been synthesized from quinoline, organic amines, aromatic compounds and halohydrocarbons.
在B3LYP/6-311G计算所得的平衡几何构型基础上，分别根据静电势和分子轨道计算研究了分子中-NH2和-N（CH3）2的亲核性，并与偏二甲基肼和卤代烃反应的实验结果进行了对比分析。
On the basis of equilibrated geometrical structure obtained by B3LYP/6-311G method, the nucleophilicity of-N(CH3)2 and-NH2 groups are investigated by electrostatic potential and MO calculations.
在B3LYP/6-311G计算所得的平衡几何构型基础上，分别根据静电势和分子轨道计算研究了分子中-NH2和-N（CH3）2的亲核性，并与偏二甲基肼和卤代烃反应的实验结果进行了对比分析。
On the basis of equilibrated geometrical structure obtained by B3LYP/6-311G method, the nucleophilicity of-N(CH3)2 and-NH2 groups are investigated by electrostatic potential and MO calculations.
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