查询词典 trichloromethane

The results indicated that: the water content of product decreased from 2580 PPm to 50 PPm by sweep gas method in the water/chloromethane system and the separation factor of water/chloromethane was 74800; the water content of product decreased from 2580 PPm to 36 PPm by vacuum method in the water/chloromethane system and the separation factor of water/chloromethane was 32500; the separation factor and the flux of the dehydration of dichloromethane were 39900 and 0.172 kg·m~(-2)·h~(-1),respectively; the separation factor and the flux of the dehydration of trichloromethane at 50℃were 57300 and 0.564 kg·m~(-2)·h~(-1), respectively; the separation factor and the flux of the dehydration of carbon tetrachloride at 60℃were 68200 and 0.612 kg·m~(-2)·h~(-1),respectively.

结果表明：利用吹扫气法，对于水/一氯甲烷操作体系，其分离因数高达74800，产品水含量由进料侧的2580 PPm，降低到50 PPm；利用抽真空法，对于水/一氯甲烷操作体系，其分离(来源：93ABC论9090文网www.abclunwen.com)因数高达32500，产品的水含量由进料侧的2580 PPm，降低到36 PPm；对于二氯甲烷脱水体系，水/二氯甲烷分离因数和渗透通量分别为39900和0.172 kg·m~(-2)·h~(-1)；对于氯仿脱水体系，操作温度为50℃时，水/氯仿分离因数和渗透通量分别为57300和0.564 kg·m~(-2)·h~(-1)；对于四氯化碳脱水体系，操作温度为60℃，水/四氯化碳分离因数和渗透通量分别为68200和0.612 kg·m~(-2)·h~(-1)。

3 And 0. 972 4 within the concentration ranges of dichloromethane （ 1 - 10 μg/g） and trichloromethane （1 -10 μg/g）, respectively.

二氯甲烷和三氯甲烷的最低检出限分别为0.027 3μg/g和0.041 0μg/g，加标回收率分别为93.6%～102%和98.1%～103%。

The other for: safrole, sassafras oil, safrole different 82 yuan / kg; 1 - phenyl -2 - propanone 2,500 yuan / kg; 3.4 dioxane methylene diphenyl -2 - propanone 7200 yuan / ton; Piperonal 1,000 yuan / kg; N-acetyl-o-amino benzoic acid 11500 yuan / ton; anthranilic acid 15,500 yuan / ton; Phenylacetate 15,000 yuan / ton; acetic anhydride 9900 yuan / ton; trichloromethane 4100 yuan / ton ; anhydrous ether 8500 yuan / ton; piperidine 58000 yuan / ton; methyl ethyl ketone 10,000 won / ton; sulfate 1,200 yuan / ton; hydrochloride 400 yuan / ton; ethanol 4200 yuan / ton.

另供：黄樟素、黄樟油、异黄樟素82元/公斤；1-苯基-2-丙酮2500元/公斤；3.4 亚甲基二氧苯基-2-丙酮7200元/吨；胡椒醛1000元/公斤；N-乙酰邻氨基苯酸11500元/吨；邻氨基苯甲酸15500元/吨；苯乙酸15000元/吨；醋酸酐9900元/吨；三氯甲烷4100元/吨；无水乙醚8500元/吨；哌啶58000元/吨；甲基乙基酮10000元/吨；硫酸1200元/吨；盐酸400元/吨；无水乙醇4200元/吨。

The other for: safrole, sassafras oil, safrole different 82 yuan / kg; 1 - phenyl -2 - propanone 2,500 yuan / kg; 3.4 dioxane methylene diphenyl -2 - propanone 7200 yuan / ton; Piperonal 1,000 yuan / kg; N-acetyl-o-amino benzoic acid 11500 yuan / ton; anthranilic acid 15,500 yuan / ton; Phenylacetate 15,000 yuan / ton; acetic anhydride 9900 yuan / ton; trichloromethane 4100 yuan / ton ; anhydrous ether 8500 yuan / ton; piperidine 58000 yuan / ton; toluene 5200 yuan / ton; methyl ethyl ketone 10,000 won / ton; sulfate 1,200 yuan / ton; hydrochloride 400 yuan / ton; anhydrous Ethanol 4200 yuan / ton.

另供：黄樟素、黄樟油、异黄樟素82元/公斤；1-苯基-2-丙酮2500元/公斤；3.4 亚甲基二氧苯基-2-丙酮7200元/吨；胡椒醛1000元/公斤；N-乙酰邻氨基苯酸11500元/吨；邻氨基苯甲酸15500元/吨；苯乙酸15000元/吨；醋酸酐9900元/吨；三氯甲烷4100元/吨；无水乙醚8500元/吨；哌啶58000元/吨；甲苯5200元/吨；甲基乙基酮10000元/吨；硫酸1200元/吨；盐酸400元/吨；无水乙醇4200元/吨。

Production processes of chlorinated methanes including monochloromethane , dichloromethane ,trichloromethane and carbon tetrachloride at home and abroad are introduced.

介绍了甲烷氯化物(一氯甲烷、二氯甲烷、三氯甲烷、四氯化碳)的国内外生产方法，认为我国应尽快发展规模化经济，加速四氯化碳向二氯甲烷、三氯甲烷的工艺转换，开发更多的甲烷氯化物衍生

In order to guarantee the safety of drinking water,the trichloromethane and tetrachloromethane concentration in drinking water of units in Beijing of certain department have been determined for five years.

为保证饮用水水质的安全，本文就某部驻京单位饮用水中三氯甲烷和四氯化碳的浓度进行了连续5年的跟踪测试和调查，并对测试结果进行了分析，提出了处理建议。

We studied chemical reaction between nitrogen oxides with dichloromethane, trichloromethane, tetrachloromethane and 1, 2-dichloroethane by Laser Magnetic Resonance.

用激光磁共振方法研究二氯甲烷、三氯甲烷、四氯甲烷、1，2-二氯乙烷与氮氧化物在火花放电、紫外光照射条件下的化学反应。

In ultraviolet and spark discharging, dichloromethane, trichloromethane, tetrachloromethane and 1, 2-dichloroethane can react with nitrogen dioxide and nitrogen oxide respectively rapidly.

由此得到氯代烷与NO〓在火花放电、紫外光照射条件下，将发生快速化学反应。这对了解臭氧层中卤代烷烃和氮氧化物之间的化学反应有一定的参考意义。

Objective To study the variety of trichloromethane in distribution network, and the influence of other parameter to the production of TCM.

目的 研究三氯甲烷(trichloromethane， TCM)在配水管网中的变化及其他水质指标对其生成量的影响。

The excess molar volumes V~E of {trichloromethane +1,3,5_ trimethylbenzene ,trichloromethane + 1,2,4_ trimethylbenzene ,nitrobenzene + 1,3,5_ trimethylbenzene ,nitrobenzene + 1,2,4_ trimethylbenzene } were determined in the whole range of composition using a vibrating_tube densimeter at 298\^15 K.

在298 15K下，用振动管密度计在全浓度范围内测量了氯仿、硝基苯分别与均三甲苯、偏三甲苯构成的二元液体混合物的过量摩尔体积VE。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。