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- Recovery and Determination of Pyromellitic Acid in Wastewater 废水中均苯四甲酸的回收与测定
- Keywords durene;pyromellitic acid dianhydride;polyimide; 均四甲苯;均苯四甲酸二酐;聚酰亚胺;
- Keywords Pyromellitic acid terbium calcium fluorescene spectrum; 铽;钙;均苯四甲酸;荧光光谱;
- Keywords Pyromellitic acid;Europium;Zinc;Chelates;Fluorescence specturm; 均苯四甲酸;铕;锌;配合物;荧光光谱;
- Keywords pyromellitic acid dianhydride;polyimide;synthesis;characterization; 均苯四甲酸二酐;聚酰亚胺;制备;表征;
- Synthesis and Crystal Structure of the 1:1 Complex of Pyromellitic Acid with Erbium 1,2,4,5-苯四甲酸铒配合物的合成及其晶体结构
- Keywords Pyromellitic acid dianhydride;collecting;condensing mode;air phase oxidation;desublimated equipment; 均苯四甲酸二酐;捕集;冷凝态;气相氧化法;凝华换热器;
- 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。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
