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- rare - earth heteropoly salt 稀土杂多酸盐
- rare earth heteropoly salt 稀土杂多酸盐
- Tungsto-cobalt heteropoly salt of potassium with Dawson structure wassynthesized. it was characterized by IR, CV, DT and X-ray. 本文合成了Dawson结构的钨钴酸钾盐,并利用红外、紫外可见、循环伏安、差热和X-射线对它进行了表征。
- ammonium 9-molybdate nickel heteropoly salt 九钼镍杂多酸铵
- Tungstocobalt heteropoly salts were synthesized using sodium tungstate and cobalt nitrate as materials. 本文以钨酸钠和硝酸钴为原料合成了钨钴杂多酸盐。
- They think of themselves as the salt of the earth. 他们自认为是社会中坚。
- Keywords As-Mo-V heteropoly salt;Phenol hydroxylation;Hydroquinone; 杂多酸盐;苯酚羟基化;对苯二酚;
- This article aims at summarizing the development of research on synthesis of tributyl citrate and the catalysis of sulfonic acid, inorganic salt, solid superacid, heteropoly acid, rare earth compound. 综述了磺酸、无机盐、固体超强酸、杂多酸、稀土化合物等催化体系对合成柠檬酸三丁酯的催化作用及研究进展。
- This article aims at summarizing the development of research on synthesis of tributyl citrate and the catalysis of sulfonic acid,inorganic salt,solid superacid,heteropoly acid,rare earth compound. 综述了磺酸、无机盐、固体超强酸、杂多酸、稀土化合物等催化体系对合成柠檬酸三丁酯的催化作用及研究进展。
- It was in the days when motorcars were rare. 那是在汽车还罕见的时代。
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- A top hat is a rare sight these days. 高顶大礼帽现在已不多见。
- I must admit I am very fond of collect rare book. 我得承认我很喜欢海内珍本。
- It's very rare for him to be so late. 他很少迟到。
- The attraction of the moon for the earth causes the tides. 月球对地球的吸引力造成潮汐。
- The earth is only a speck in the universe. 地球在宇宙中只不过是一个小点罢了。
- Red squirrels are now very rare in Britain. 红色的松鼠在英国已十分罕见了。
- The white-lipped deer are rare in this area. 白唇鹿在这个地区很罕见。
- These rare tigers are protected by special laws. 这些珍贵的老虎受到专门法律的保护。
- How on earth do they manage to rob the bank? 他们到底怎么抢了银行的?