柠檬酸

Lemons always cause people to pucker up.

柠檬酸的使人收拢嘴唇。

Single-stranded DNA adsorbs on negatiely charged citrate ions on the gold nanoparticles while double-stranded DNA does not.

单链DNA金属微粒区吸附着负电荷柠檬酸盐离子，而双链DNA并不是这样的。

The enzyme activity of PPO showed a decreasing trend with the prolonging of heat-preservation time, which indicated that PPO was a kind of thermal-susceptible enzyme. Three kinds of inhibitors all had inhibitors on the activity of PPO from C. comas. Among them, the inhibition of NaHSO3 was strongest, followed by ascorbic acid and citric acid.

PPO酶活性随保温时间的延长呈降低趋势，说明PPO是一种热敏感性酶。3种抑制剂对鸡腿菇PPO活性均有抑制作用，其中NaHSO3的抑制作用最强，抗坏血酸和柠檬酸次之。

It has a characteristic sharply sour taste and is used in many foods, confections, and soft drinks.

柠檬酸可做糖果点心和无酒精饮料的调味香料，还是金属清洁剂的组分。

It has a characteristic sharply sour taste and is used in many foods, confections, and soft drink s.

柠檬酸可做糖果点心和无酒精饮料的调味香料，还是金属清洁剂的组分。

In the machinery industry, the sodium citrate is widely used for replacing sodium cyaniding to clean the metal surface of heat exchanger metal surface and the chemical pipeline, because of its nonpoisonous, no pollution, high combine performance , it is good buffer and complexing agent in the electroplate industry.

在机械造业中，柠檬酸纳由于无毒、无污染，高整合性能，因此广泛用于替代氰化钠，处理金属表面热交器和化工管道的清洗剂，是电镀工业良好的缓冲剂和络合剂。

The results show that the sample prepared by coprecipitation method exhibits the highest activity and has the largest crystallite size, and after reaction for 140 min, 53.6% of rhodamine B is decolored; while for catalyst prepared by the citric acid complexation, the decoloration ratio is only 9.0%, though the latter has a higher surface area and smaller crystallite size than the former.

研究结果表明：这4种方法均能制备单一的钙钛矿型LaFeO3催化剂，其中，共沉淀法制备的催化剂具有最大的晶粒尺寸，最小的比表面积，仅为0.4 m2/g，显示出最强的光催化活性；在可见光照射下反应140 min，罗丹明B的脱色率达到53.6%。柠檬酸络合法制备的催化剂的比表面积最大，为8.1 m2/g，但其脱色率仅为9.0%。

Result The processing conditions were as follow: Taking the mixture of Vc and lemon acid as antioxidant, the ratio of agarics to water was 1:60, extracting temperature was 60-80 ℃, extracting time was 60 min, the ratio of beltlines eddoes to water was 1:10, microwave was 5 min.

结果］结果表明，最佳工艺条件为：以Vc与柠檬酸混合液作护色剂；木耳与水的物料比为16：0，在6080℃浸泡60 min；香菇与水的物料比为11：0，高温微波5 min。

The influence of deposition potential and Na-citrate concentration on composition and morphology of electrodeposited films was studied in detail.

深入探讨了沉积电位和柠檬酸钠浓度对预制层的形貌和成分的影响规律。

The optimum bath components and operation conditions of electrodepositing Zn-Mn alloy from a sulfate-citrate bath were studied.

研究了硫酸盐-柠檬酸盐体系电沉积锌锰合金的镀液组分及工艺条件，讨论了主盐浓度、络合剂浓度、电流密度及pH等对合金镀层中锰含量的影响。

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。