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- Secondly, the acid strength, specific surface, size and the feature, the structure of acid center and the content of Sulphur and Titanium have been characterized by IR, XRD, TEM, SEM, BET, EDS,TG-DTA and Hammett indicator. 我们利用IR，XRD，TEM，SEM，BET，EDS,TG-DTA，Hammet指示剂法等表征手段对催化剂的酸性，比表面，粒度形貌，酸中心结构，硫钛含量等进行了考察。
- receptors consisting of metal or Lewis acid center; (2 )含金属和路易斯酸的受体 ;
- Formation of solid acid center using Mai Fan Rock carriter 麦饭石作为固体酸载体时酸中心形成过程的研究
- 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。
- 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。
- An acid can react with a base to form a salt. 酸可以和碱起反应而生成盐。
- This substance must be treated with acid. 这材料得用酸来处理。
- The acid burnt a hole in the carpet. 酸把地毯烧了个洞。
- Carbolic acid can be used to make antiseptic. 石炭酸可用来做防腐剂。
- The acid eats into metals quickly. 酸腐蚀金属很快。
- Now they wear rubber fingers treated with lactic acid. 现在他们戴上了用乳酸处理过的橡皮指套。
