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- In a 200 mL stainless steel autoclave, dimethyl 2,6 naphthalene dicarboxylate (DM 2,6 NDC) was prepared by reacting 2,6 naphthalenedicarboxylic acid (2,6 NDA) with methyl alcohol in the presence of phosphotungstic acid as catalyst. 在 0 .;2 L不銹鋼高壓釜中;用磷鎢酸作催化劑;以 2;6萘二甲酸和甲醇為原料制備了 2;6萘二甲酸二甲酯。
- He gave me a taste of his acid wit. 他讓我嘗到了他敏銳尖刻之機智的滋味。
- Acid irritates the stomach lining. 酸能刺激胃黏膜。
- Acid had pitted the surface of the silver. 酸把銀器的表面腐蝕了。
- I am doing an experiment of neutralizing acid. 我在做一個(gè)中和酸的實(shí)驗。
- Can Jones beat Smith? That's the acid test. 瓊斯能擊敗史密斯嗎？那是個(gè)嚴峻的考驗。
- A salt or an ester of boric acid. 硼酸鹽一種硼酸鹽或硼酸酯
- She dropped acid in high school. 她高中時(shí)代服迷幻藥。
- The metal is fretted with the acid. 金屬被酸腐蝕。
- The chemical can behave as an acid. 這種化學(xué)制品能起酸的作用。
- The acid has eaten through the metal cover. 酸已把金屬蓋子蝕穿了。
- The worker's overalls were badly burned by acid. 這位工人的工作裝被酸腐蝕得很厲害。
- An acid can react with a base to form a salt. 酸可以和堿起反應而生成鹽。
- This substance must be treated with acid. 這材料得用酸來(lái)處理。
- The acid burnt a hole in the carpet. 酸把地毯燒了個(gè)洞。
- Carbolic acid can be used to make antiseptic. 石炭酸可用來(lái)做防腐劑。
- The acid eats into metals quickly. 酸腐蝕金屬很快。
- Now they wear rubber fingers treated with lactic acid. 現在他們戴上了用乳酸處理過(guò)的橡皮指套。
- The acid in the rain slowly ate away at the stone wall. 雨水中的酸性物質(zhì)慢慢侵蝕著(zhù)石墻。
- Putting an acid and a metal together causes a reaction. 將酸和金屬放在一起會(huì )引起反應。
