查询词典 acetic acid

The effects of molar ratio of anhydrous ethanol to glacial acetic acid, dosage of catalyst, reaction temperature and reaction time on the esterification ratio and reuse of catalyst were discussed.

探讨了酸醇物质的量的比，催化剂的用量，反应时间和反应温度对酯化率的影响及催化剂的重复使用情况。

Of glacial acetic acid, 15 g.

先给你个，希望有用。

In the method glacial acetic acid was used as solvent, and 0.2 % viola crystalline was used as indicator.

建立了测定盐酸水苏碱含量的非水滴定法。

The detection of infrared spectrometer and ultraviolet spectrometer proved that glacial acetic acid had been inserted into graphite.

并综合正交试验设计和实际验证试验的结果，得到制备可膨胀微粉石墨的最佳工艺条件。

The mobile phase was methyl alcohol-5% glacial acetic acid (22∶78) and detecting wavelength was 322 nm.

5%冰醋酸溶液（22∶78）为流动相，检测波长322 nm。

The mobile phase was methyl alcohol-5% glacial acetic acid (22∶78) and detecting wavelength was 322 nm.

方法采用HPLC法，uBondapak C18(4.0 mm×250 mm)柱，甲醇 5%冰醋酸溶液（22∶78）为流动相，检测波长322 nm。

Based on the comparison of coal desulfurization effects of several kinds of oxidants,the mixed oxidant of glacial acetic acid and hydrogen peroxide was selected as the best.

在用多种氧化剂对煤炭脱硫效果进行比较研究的基础上，筛选出脱硫效果最好的冰醋酸与过氧化氢混合物氧化剂。

The effects of reaction temperature, reaction time, the quantity of glacial acetic acid, the quantity of hydrogen peroxide and the quantity of magnesium sulfate anhydrous on the results of experiment are investigated.

探讨了该工艺的可行性，分别考察了反应温度、反应时间、冰醋酸用量、过氧化氢用量以及无水硫酸镁用量对实验结果的影响。

It was demonstrated that glacial acetic acid could promote the transition from hydroxide to oxide and enhance the crystallization of product, which is consistent with the results in nano-MgO preparation by modified precipitation.

说明冰乙酸在此制备过程中的促进了由氢氧化物到氧化物的转变，有利于产物的晶化，这与修饰沉淀法制备纳米MgO中的结论是一致的。

The effects of various influence factors, such as the amounts of glacial acetic acid, hydrogen peroxide and catalyst, reaction temperature, reaction time were discussed.

采用过氧乙酸法制备环氧棕榈油，研究了乙酸、双氧水、催化剂用量以及反应温度、反应时间对环氧值的影响。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。