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- Three different zones A,B,C have been tested to F, Cu, Zn, Se,Ca,P and Sulfuric acid ion in soil,water,blood and diet. 通过A、B、C三个不同地区的土壤、饮水、饲草料、血液中F、Cu、Zn、Se、Ca、P和硫酸根离子的检测，证实了A区饮水氟为2.;7mg/L，硫酸根离子为165
- In addition to free CO2 and O2, the meteoric water contains dissolved H+,HCO_3~-, HSO_4~(2-), sometimes organic acid ions, various kinds of salt ions and complex ions, all of which can be involved in the weathering. 这种大气水中除了含有游离的CO2、O2气体之外，一般还溶解有H+、HCO_3~-、HSO_4~-离子、络合离子，有时还含有有机酸离子，各种盐类离子、络合离子，这种化学条件下都能进行风化作用。
- In this paper, the methyl cinnamate was synthesized from cinnamate acid and methanol by using strongly acidic ion exchange resin as catalyst. 以磺酸型阳离子交换树脂为催化剂，由肉桂酸和甲醇合成了肉桂酸甲酯。
- The main characteristics of this method are that reaction is quick, purity is high, operation is simple, clean fatty acid ion replaces halogen ion that is noxious, and it is greener. 该方法的主要特点是反应快速纯度高，操作简便，清洁的脂肪酸离子代替有毒的卤素离子，更加绿色。
- With hydrogen sulfide and tetrapropylene as raw materials, TDM was synthetized by the one step process in the presence of acidic ion exchange resin. 摘要 以硫化氢和十二烯为反应原料，以酸性离子交换树脂为催化剂一步合成叔十二碳硫醇。
- low concentration of inorganic acid ion 低无机酸离子
- sulfonie acid ion exchange resin 磺酸型阳离子交换树脂
- He gave me a taste of his acid wit. 他让我尝到了他敏锐尖刻之机智的滋味。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- I am doing an experiment of neutralizing acid. 我在做一个中和酸的实验。
- Can Jones beat Smith? That's the acid test. 琼斯能击败史密斯吗？那是个严峻的考验。
- weekly acidic ion -exchange fiber 弱酸性离子交换纤维
- Strong acidic ion exchange fiber 强酸离子交换纤维
- A salt or an ester of boric acid. 硼酸盐一种硼酸盐或硼酸酯
- She dropped acid in high school. 她高中时代服迷幻药。
- The metal is fretted with the acid. 金属被酸腐蚀。
- The chemical can behave as an acid. 这种化学制品能起酸的作用。
- The acid has eaten through the metal cover. 酸已把金属盖子蚀穿了。
- The worker's overalls were badly burned by acid. 这位工人的工作装被酸腐蚀得很厉害。
