酸性反应

The present paper aims to give a report on our research of the adsorption characteristics of the phosphate on the hydrous ceric oxide.

实验结果表明，水合氧化铈具有优异的除磷特性，在较宽pH值范围内对磷酸根有较强的吸附能力，酸性条件更有利于吸附反应的进行。

The optimum temperatures for hydrolysis of the chitosanases were determined to be 52 for ChoA and 48 for ChoB, respectively.

两种壳聚糖酶最适反应pH值均为pH4.0，在pH 3.0—5.0的酸性环境中保持稳定。

The fact that wastewater has higher chromaticity removal efficiency in acid medium than in basic medium indicates that H+ ions play an important role in chromaticity removal ,possibly by a mechanism of deoxidation in which H+ ionsreact with the organic compound of pollutants in wastewater and cause the chain rupture of chromophoric or anxochromic groups from the organic compound molecules.

事实已经废水色度去除效率高，比在酸性介质中显示基本氢离子色度去除起到了重要作用，可能的机制脱氧其中氢离子的反应有机化合物废水和污染物链条断裂造成anxochromic色或团体从有机化合物分子。

In this paper , experiments on acid solution under still hydraulic condition and relation of pH value with time as well as analysis of equilibrium of corroding system are stated.

本文主要给出非流动的水动力条件下酸性水侵蚀试验的浸液pH值与时间的关系，以及体系侵蚀反应的平衡分析。

The super acid SO〓/ZrO〓, due to its strong acidity, favores the dealkylation and disproportionatin of 4-TBC or/and DTBC, preventing the increase of the selectivity for 4-TBC.

而固体超强酸SO〓/ZrO〓由于酸性较强，易于发生4-叔丁基邻苯二酚和3，5-二叔丁基邻苯二酚的脱烷基反应和4-叔丁基邻苯二酚的歧化反应，因此不利于提高4-叔丁基邻苯二酚的产率。

Experimental study on enhanced deaquation process for extra-heavy crude oil using dehydrant ;2. DMF refining by molecular sieve as dehydrant ;3. Hybrid catalysts composed of JC207 methanol synthesized catalyst and dehydrant (HZSM-5 zeolite or γ-Al2O3) were prepared for the synthesis of dimethyl ether.

采用甲醇合成催化剂JC207和固体酸脱水剂(HZSM-5分子筛或γ-Al2O3)混合制得合成二甲醚双功能催化剂，并在固定床反应装置中进行了活性评价，考察了固体酸脱水剂的酸性对一步法合成二甲醚的影响。

Originally techniques dropped formaldehyde into the mixture of phosphorous acid and monosodium of imino diacetic acid in high temperature.

原工艺采用的是在酸性条件下高温时将甲醛滴加到亚磷酸与亚氨基二乙酸一钠盐混合溶液中进行反应，考虑到工业上亚磷酸的合成一般采用三氯化磷水解、提浓、结晶制得，直接将三氯化磷用于双甘膦的合成，不仅可以简化操作过程，而且对于降低生产成本和能耗有明显意义。

A spectrophotometry method, which based on the reaction of diacetyl monoxime and urea in acidic solution, was established for determination urea in bovine milk.

根据二乙酰一肟与在酸性条件下尿素的反应，建立了一种分光光度法快速测定牛奶中尿素含量的方法，该方法可以定性和定量测定牛奶中尿素含量。

The esterification reaction of hexane diacid with 2 ethyl hexanol was studied by using modified β zeolite as catalysts.

用改性β沸石作催化剂，研究了己二酸与2－乙基己醇的酯化反应，讨论了阳离子交换度、焙烧温度及表面酸性对催化活性的影响。

Process technology for manufacture of δ-layered crystalline sodium disilicate using dilute alkali liquor and acidic silica residue ,which are waste effluents from zirconium oxychloride production,with supplement of a small amount of quartz sand was studied.

利用氯氧化锆生产过程中排放的稀碱液、酸性硅渣辅加少量石英砂，研究了δ-层状结晶二硅酸钠的制备工艺，得到较佳合成工艺条件为：反应液配比M=n(S iO2)/n(Na2O)=2。

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。