柠檬酸

In this study, we would compare with cleaning efficiency between citric acid and acetic acid.

在本论文中，我们将比较柠檬酸和醋酸移除铜离子的能力。

We also compare the effect between acetic acid and citric acid.

此外还比较了乙酸和柠檬酸的酸解效果。

Citric acid anhydride was synthesized by citric acid and acetic anhydride with acetic acid as solvent.

以柠檬酸和乙酸酐为原料，乙酸为溶剂合成柠檬酸酐。

In this paper, high citric acid content was analyzed by precipitation in the system of treating SO2 in flue gas by citrate solution.

本文采用重量法对柠檬酸盐法治理低浓度二氧化硫体系中柠檬酸根进行了分析测定。

The optimum amount of Tea Polyphenols is 200mg/kg. The Citric acid and Vitamin C are the synergists of Tea Polyphenols. The experiment result shows that the effect of Vitamin C is better than Citric acid.

在苦杏仁油中茶多酚的最适添加量为200mg/kg，柠檬酸和维生素C对茶多酚表现出一定的增效作用，且维生素C的效果优于柠檬酸。

Based the optimized batch-fermentation condition, it was confirmed that the DE of cassavahydrolysate in the fed batch culture was 80, 4%(NH4)2SO4, adding fed batch culture four times 36hours after the fermentation beginning, and 1.5 hours of fed interval, were the optimized fed-batchfermentation conditions, by studying the culture composition, method, original time and interval offed batch, and some main parameters of the citric acid fermentation, such as citric acid yield, invertrate, fermentation periods and residual glucose.

在批式发酵优化条件的基础上，通过对补料液的组成、补料方式、流加起始时间、流加间隔时间等对柠檬酸发酵过程的主要参数，如产酸率、转化率、发酵周期、残糖等的影响进行了研究，确定了柠檬酸补料发酵的优化条件，即：补料液中木薯糖化液的DE值为80，加入0.04%(NH4)2SO4；发酵36h小时开始分四次流加补料液，流加的间隙时间为1.5小时。

The optimum parameters of chemical passivation in citric acid solution were 4%citric acid, 65°C, 15min, and the time of re-treat in 50%HNO_3 was 11min.

硝酸电化学钝化的较优工艺为：硝酸浓度10％，800mV恒电位阳极极化，25℃左右，时间15min；柠檬酸化学钝化的较优工艺为：柠檬酸浓度4％，温度65℃，钝化时间15min，浓硝酸后处理11min。

Company products are mainly involved in polyurethane, PVC, resin, paint, plastics, pharmaceuticals and other industries, the main oxidation products of alkyl tin, tributyltin chloride, tin dilaurate, citric acid esters, their production capacity for the oxidation of alkyl tin 50T / month, tributyltin chloride 30T / month, tin dilaurate 30T / month, citric acid ester 100T / month.

公司产品主要涉及聚氨酯、PVC、树脂、涂料、塑料、医药等行业，主要产品有氧化烷基锡、氯化丁基锡、月桂酸锡、柠檬酸酯等，其生产能力为氧化烷基锡50T/月、氯化丁基锡30T/月、月桂酸锡30T/月、柠檬酸酯100T/月。

Citric acid lauryl alcohol ester was synthesized by the esterification of citric acid with lauryl alcohol using p methylbenzenesulfonic acid or cation exchange resin as the catalyst.

分别用阳离子交换树脂和对甲苯磺酸催化柠檬酸和月桂醇进行酯化反应，合成了柠檬酸月桂醇酯。考察了催化剂用量、原料配比、反应时间和反应温度等对合成反应的影响，优化了合成工艺条件。

Adding citric acid affects the amount and shape of liquid cryst...

加入柠檬酸对液晶数量和形状均有影响，柠檬酸的加入量大于 0 0 1%时乳液变稀，液晶减少。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。