查询词典 chemically

The results showed that Kaidimycin was chemically neutral, macrocylic polylactones, stable and liable to dissolve into water and pyridine, slight to dissolve into methanol, ethanol and N-butanol, difficult to dissolve into ethyl acetate, acetone, benzene and chloroform. Chemical reaction of functional group of Kaidimycin showed that it had glycoside, amino acid and aldehyde, no reducing sugar, polypeptide and phenol.

凯地菌素属中等极性的、中性抗生素，极性纸层析结果与多烯类抗生素的纸层析结果相似：易溶于水、吡啶，微溶于甲醇、乙醇、正丁醇，不溶于乙酸乙酯、丙酮、苯、三氯化碳；对高温、光照和紫外处理有很好的稳定性；官能团反应试验结果发现，凯地菌素可能含有糖苷键、氨基酸伯氨基和醛基，不含有还原糖、多肽和酚基，高锰酸钾、浓硫酸反应与多烯大环内酯类抗生素的特性相似；并且依据纯品，采用生物法和分光光度法对摇床发酵液进行了效价的测定。

HPMC is prepared when a purified form of cellulose is reacted with sodium hydroxide solution to produce a swollen alkali cellulose that is chemically more reactive than untreated cellulose.

当被净化的纤维素与氢氧化纳溶液反应产生一种膨胀碱性纤维素时，HPMC就产生了，这种纤维素在化学上比没有经过处理的纤维素更易起反应。

The Golden Triangle Partnership is not, however, looking for new molecules to turn into chemically pure drugs.

然而，黄金三角合作计划却并不重视寻找新的有效成分制作纯化学药物。

Aspirin is made chemically now in pure form, but the original source was willow bark.

现在的阿司匹林就是纯态的化学物制成的，但原始的材料却是柳树皮。

Tragedy is chemically pure. Hence its power to act quickly and intensely on our feelings.

悲剧是有化学纯度的东西，所以它才能具备那种迅速而强烈地影响我们的力量。

The highly active, pure and chemically homogenous fine powder was prepared by sol-gel technique.

用sol-gel法制备了活性、化学均匀性和纯度均高的原料微粉。

Distilled water is chemically pure and is always used for medicinal purposes.

蒸馏水是化学纯净水，始终用于医学。

Describe how a mixture of 1-hexyne and 2-hexyne can be separated chemically into two pure components.

答：如何利用化学方法将1-己炔和2-己炔的混合物分离开来？

It is essential that the water be as nearly chemically pure as. Is commercially feasible , since traces of impurities react with other constituents of the drink.

由于水中的痕量杂质会与饮料中的其它成分发生反应，因此对水进行化学提纯是必要的，从商业角度看这也是可行的。

The experiments were carried out chemically pure ZnO and reducing agent CO to study the reduction mechanism of the process. And this reduction is important in other metallurgical processes.

为探索其还原过程的规律，首先采用化学纯ZnO进行CO还原实验，研究还原过程的有关规律，这一还原反应也是其它冶金过程中常见的和十分重要的反应。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。