查询词典 chloro-carbonate

As the paper industry,important addition agents,3-chloro-2-hydroxypropyl trimethyl ammonium chloride was useful the activity intermediates.

3-氯-2-羟丙基三甲基氯化铵可作为造纸工业中的重要助剂，是有用的活性中间体。

In the process, 2, 4-difluoroaniline is used to carry out ammoniated reaction. Then through a series of similar reactions, the important intermediate of temafloxacin, which is called 7-chloro-6-fluoro-1-(2, 4-difluorophenyl)-1, 4-dihydro-4-oxo-3-quinoline acid, is gained.

与环丙沙星和二氟沙星类似，用2，4-二氟苯胺进行胺化反应，再进行一系列类似的反应，制得合成替马沙星的关键中间体7-氯-6-氟-1-（2，4-二氟苯基）-1，4-二氢-4-氧代喹啉-3-羧酸。

Firstly, cotton cellulose was basified and aged to alkali cellulose, then samples reacted with 3-Chloro-2-Hydroxypropylurea to produce 3-Creido-2-Hydroxypropyl cellulose.

将棉纤维进行碱化、老化处理，所得到的碱纤维再与中间体3-氯－2-羟丙基脲反应制得3-脲基－2-羟基丙基纤维素。

Chloro 2 hydroxypropyl trimethyl ammonium chloride an etherizing agent ,for modified starch, was synthesised from epichlorohydrin.

以环氧氯丙烷为原料合成了 3-氯- 2 -羟丙基基三甲基氯化铵，后者作为改性淀粉的醚化剂。

CrO-Y2O3catalysts were prepared by a deposition-precipitation method and tested by fluorinating 2-chloro-1,1,1-trifleuoroethane (HCFC-133a) to synthesize 1,1,1,2-tetrafluoroethane (HFC-134a).

用沉积－沉淀法制备了CrO-Y2O3催化剂，考察焙烧气氛及温度对1，1，1-三氟－2-氯乙烷(HCFC-133a)气相氟化合成1，1，1，2-四氟乙烷(HFC-134a)催化性能的影响。

Under catalysis of AlCl3, trans-1-chloro-3-phenyl-1-propen-3-one was first prepared using benzoyl chloride and acetylene in CH2Cl2 at 20~25℃, which the yield is 7% higher than that in CCl4 at 40~45℃.

通过对其反应条件的研究，首次用苯甲酰氯和乙炔在三氯化铝作用下合成出反－3-苯基－1-氯－1-丙烯－3-酮；并发现用二氯甲烷作介质在20~25℃下的反应产率，比用四氯化碳作介质在40~45℃下的反应产率约高7%。

We are a wellknown producing base of dye intermediates. The main products:2,4-Dinitrochlorobenzene, 6-Bromo-2,4-Dinitroaniline,6-chloro-2,4-Dinitroaniline,2-Amino-4-Nitrophenol, 2,4-Dintrophenol, 2,4-Dinitroaniline, and so on.

我们是国内有名的染料中间体生产基地，主要产品2，4-二硝基氯苯、6-溴-2，4-二硝基苯胺、6-氯-2，4-二硝基苯胺、2-氯基-4-硝基苯酚、2，4-二硝基苯酚。

This order is basically in line with the decrease of chloro-content of the adsorbents from PVC to SP.

该次序基本上与从聚氯乙烯到固体石蜡吸附剂中氯含量逐渐降低的次序相一致。

The asymmetric reduction of prochiral P-oxo ester, aromatic ketone and aliphatic ketone to its corresponding chiral alcohol by yeast cells were studied respectively in this work when ethyl 4-chloro-3-oxobutyrate, acetophenone and 2-octanone were as the model substrates.

本文以4-氯乙酰乙酸乙酯、苯乙酮和2-辛酮分别为β-羰基酯、芳香酮和脂肪酮的模型底物，研究了利用活性酵母细胞催化这三类前手性酮不对称还原合成相应手性醇的反应特性。

The phosphines such as 〓, dppm bis(diphenylphosphinemethane, dppebis(diphenylphineethane and dppp bis(diphenylphosphinrpropaneare chosen for study. The chloro alkane, bromide alkane and acetone arechosen as solvents.

选择有机单膦〓和双膦配体dppm二(二苯基膦甲烷、dppe二(二苯基膦乙烷、dppp二(二苯基膦乙烷与〓反应，选择氯代烷、溴代烷和丙酮为反应溶剂。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。