查询词典 acid reaction

This result was close to that obtainedin the reaction systems containing both acid and halide additives under the samecondition.

在283 K反应4小时之后，乙醇溶剂中H_2O_2的浓度可以达到1.1％，该结果与目前报道的相同反应条件下液相共存酸和卤素助剂的催化剂体系的H_2O_2生成能力相接近。直接合成H_2O_2反应中得到的H_2O_2浓度相接近。

By reaction of alkyl halide with metallic sodium or hydrogen acid to restore the alkyl halide obtained.

可由卤代烷与金属钠反应或以氢碘酸还原卤代烷制得。

The results show that the catalyst could catalyze the Heck reaction of substituted aryl halide with crylic acid, the yields were above 80%.

结果显示，CL-HA-Pd/Ni具有较快的反应速率和较高催化活性，可成功催化取代芳基卤与丙烯酸的Heck反应，产率在80%以上。

Results］ The optimal process condition of the hydrolysis of phytic acid was:the temperature, 37 ℃; the pH value, 5.0; the substrate concentration, 10% and the best reaction time, 16 hours.

结果］水解植酸的最佳工艺条件是：温度为37 ℃、pH值为5.0、底物浓度为10%、反应时间为16 h。

Phosphogypsum, sulfuric acid, decomposition outside kiln, reaction coupling, comprehensive utilization, cement kiln

磷石膏，硫酸，窑外分解，反应耦合，综合利用，水泥窑

C for 2-3 hours;(2) fiber-grafted polymer preparation, mixing activated fiber material, phenylethene, acroleic acid, acrylic nitrile, acrylamide, potassium peroxodisulfate and water evenly, proceeding reaction at normal pressure and 50-60 Deg.

II。纤维素接枝聚合物材料的制备，将步骤I制备的活化纤维材料、苯乙烯、丙烯酸、丙烯腈、丙烯酰胺、过硫酸钾和水混合均匀，在常压、50～60℃聚合反应2～4小时，所得反应产物进行干燥。

According to the study and analysis of micro-processes, the reaction mechanism and kinetics of liquid-solid phase which feature phosphoric acid and phosphate ore particles system are revealed.

同时研究了以磷酸与具有丰富内孔隙的磷矿颗粒为代表的液固两相反应的机理和动力学模型。

A chemical formed by the reaction of an acid and an alcohol.

一种由酸和醇反应而形成的化学结构。

A reaction between an acid and a base that yields a salt and water.

各种水溶性的化合物，能使石蕊变蓝，与酸反应形成盐和水。

Formed by reaction between an acid and an alcohol with elimination of water.

一分子酸和一分子酒精反应并除去水后形成。

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。