查询词典 acid reaction

Anatise TiO2 nano-powder with high stability and high photocatalytic activity was prepared using precursor metatitanic acid raw material at mild reaction by chemical method.

使用简单的化学方法，以偏钛酸为原料，利用化学添加剂，通过酸碱作用，在较温和的反应条件下（常压、120℃之下），制备了具有高稳定性、高活性的锐钛矿型纳米TiO2粉体。

The results indicated isoprene was soon consumed under the condition of excess ozone. During the reaction, the major carbonyl products formed were methyl vinyl ketone, methacrolein, methylglyoxal, and formaldehyde. Formic acid, CO and CO2 were also among the products.

在反应温度(294±2)K，压力为1.01×10^5Pa空气，O3过量的条件下，异戊二烯很快反应完全，反应中生成的羰基产物主要包括甲基丙烯醛、甲基乙烯基酮、丙酮醛和甲醛；产物中还包括甲酸、一氧化碳和二氧化碳。

Fumaric acid-containing wastewater was pre-treated by a method of microelectrolysis of iron and carbon , with the reaction time, pH value, temperature and ratio of iron to carbon studied.

采用铁炭微电解法预处理富马酸废水，研究了反应时间、pH值、温度、铁与炭的比例对预处理的影响，试验结果表明：当反应时间180min，铁炭比3∶1，反应温度313K时，CODCr去除率35。

In this paper, we have investigated and discuss the appropriate conditions under which the developing reaction to responds to Phospho Vando Molybdic acid and basic dye malachite green in aqueous solution by conducting experiments, through which the best quantity about addition of reagents can be fixed.

研究了磷钒钼酸与碱性染料孔雀绿在水溶液中的显色反应，确定了最佳反应条件，并将这种方法应用于复混肥中磷含量的测定，试验结果表明，此方法的灵敏度高、重现性好、准确度高。

Molybdic acid aggregates were prepared by the reaction of ammonium molybdate with HNO3 and HCl in a coexisting HAc or cetyl-trimethyl ammonium bromide solution, respectively.

钼酸铵在醋酸和十六烷基三甲基溴化铵调节下分别与硝酸和盐酸反应制备了多钼酸聚集体。

The molybdic acid aggregates with diameter of 1--2μm and length of several decades-micron can be obtained by the reaction of higher-concentration ammonium molybdate with HNO3 in a coexisting HAc or CTAB solution, repectively.

较高浓度的钼酸铵分别在醋酸和CTAB调节下与硝酸反应均可制备直径为1~2μm，长为数十微米的细长晶须，经过500~600℃烧结后则相应变为纳米级片状和颗粒状α-MoO3粉体；低浓度的钼酸铵在CTAB调节下与盐酸反应可制备不规则的晶体棒，经过烧结后得到颗粒状α-MoO3粉体。

Molybdic acid aggregates were prepared by the reaction of ammonium molybdate with HNO_3 and HCl in a coexisting HAc or cetyl-trimethyl ammonium bromide solution,respec- tively.

钼酸铵在醋酸和十六烷基三甲基溴化铵调节下分别与硝酸和盐酸反应制备了多钼酸聚集体。

The effects of reaction temperature on the yield and the purity of monochloroacetic acid under a determined molar ratio of raw materials were investigated.

用氯气与醋酸在氯乙酰氯催化下合成了一氯乙酸。

Under alkaline conditions, carboxymethyl konjac glucomannan with different degree of substitution was prepared through reaction of monochloroacetic acid and konjac glucomannan using isopropyl alcohol as dispersing agent.

以异丙醇为分散剂，在碱性介质中一氯乙酸和魔芋葡甘聚糖反应制备了系列羧甲基魔芋葡甘聚糖。

In the presence of acid catalyst, APG is formed by use C8 - C14 monohydric alcohols、low-carbon alcohol and glucose monohydrate with one step synthesis reaction, and it could be used without fractionation in most applications.

在酸性催化剂存在下，用C8～C14单羟基醇和低碳醇与一水合葡萄糖反应，一步合成较高纯度，在大多数应用场合不经分馏而直接使用的浅色烷基糖苷。

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。