查询词典 decanedioic acid

The results show that the catalytic activity is mainly affected by the acid strength and number of acid center.

对合成甲基叔丁基醚反应的几种沸石分子筛进行研究，认为催化剂的活性主要受催化剂的酸强度及酸中心数影响。

Introduce the composition of naphthenic acid and two methods about the determination of acid number .

介绍了石油酸的组成及国内测定原油酸值的两种方法，对采用不同方法测定原油酸值产生的差异进行分析，建议采用电位滴定法测定原油的酸值。

TsOH-SBA-15 had higher catalytic activity than sulfuric acid with the same number of acid sites.

结果表明，该催化剂对冰乙酸和正丁醇的酯化反应具有较高的催化活性。

Naphthenic acid corrosion rates were directly related to experimental temperature and total acid number.

采用失重法和表面分析研究了碳钢和不锈钢在高温环烷酸油介质中的腐蚀行为规律。

All the pollution is not acid rain, i.e., sulphuric and nitric acid dissolved in precipitation .

酸雨为含有硫酸和硝酸的雨，它并不是造成污染的唯一原因。

The economic loss is caculated in the south of the acid rain area and it is proved that economy is badly affected by the damage to the materials caused by acid precipitation.

在此基础上，本文进一步对南方酸雨区进行了估算，证明了酸沉降对材料的破坏对经济产生了严重的影响。

There is acid rain in the precipitation of 98 cities, accounting for 91.6% of the cities in the Acid Rain Control Zone.

南方地区酸雨污染较重，酸雨控制区内90%以上的城市出现了酸雨。

The process of becoming acid or being converted into an acid .

变成酸或者被转变为一种酸的过程。

The effects of concentration of sulfuric acid, temperature and time on acid leaching process were studied, and the regularity of these affecting factors was analyzed.

研究了酸浸过程中硫酸浓度、浸取温度、时间对铁浸出率的影响，分析了各个影响因素的规律性。

Large amount of acid radical ion of acid salt can coexist or not in the solution depends on whether they have proton transfer reaction.

一般酸式酸根离子在溶液中能否大量共存，主要看它们之间能否发生质子转移反应。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。