查询词典 chloric ether

In addition,the chemical reactivity、 resin mechanics properties and the influence of polymer ether imide toughening 5406 resin were discussed in the thesi...

本文还对5406树脂体系的化学反应性、树脂浇注体力学性能以及聚醚酰亚胺增韧改性5406双马树脂进行了研究。

By using this new method the optimum extraction condition was obtained as follows extraction time 19.39 hours impregnant capacity 18.90mL and percent of petroleum ether 46.26%.

结果表明，脂质提取的优化工艺条件为2.00g海藻粉、提取时间19.39h、溶剂的量18.90mL石油醚百分含量46.26%。

Methods BALB/c mice were anesthetized with ether and infected intracranially with 20 μl 4.5×108 plaque forming units of coxsackievirus B3. CVB3 RNA in mice brain was detected by reversal transcription polymerase chain reaction and the pathological changes of brain tissues were observed by HE staining.

BALB/c纯系小鼠分两组，实验组小鼠颅内直接注射滴度为4.5×108 pfu的柯萨奇病毒B3悬液20 μl，对照组颅内注射生理盐水20 μl，应用逆转录酶聚合酶链反应法测定脑组织中CVB3 RNA含量，HE染色观察脑组织病理学的改变。

It is found that the coexisting curves of the temperatures versus the volume fractions of water, cyclohexane and diethylene glycol monobutyl ether are respectively inverse "S" type curve, positive "S" type curve and "knot-shape" curve.

用改进的相体积法测定了水－环己烷－二乙二醇丁醚三元体系的相平衡，给出了不同温度下平衡共存三液相的体积分数及平衡共存三液相的相密度的共存曲线。

The poison activity, stomach toxicity action and nonselective food refusal activity of extracts and fractions obtained by extracting the stem of Mirabilis jalapa L against the 4th instar larvae of Pieris rapae L, with 3 polarity solvents（petroleum ether, chloroform and ethanol）were determined by the methods of feeding, leaf-sandwich and leaf dish.

用饲喂法、叶片夹毒法、叶磲法测定了紫茉莉茎的3种极性溶剂提取物及萃取物对菜粉蝶幼虫的毒杀活性、胃毒作用、非选择性拒食活性。

Crystallographic equivalence of ether and ketone group in the crystal structure of poly s was discussed again on the basis of the work reported in the literatures, which there were different viewpoints to.

对存有争议的聚芳醚酮晶体结构醚酮等效性问题进行了研究。首先设计并合成两种新型聚芳醚酮类聚合物PEDK与PEDEKDK，并对其晶体结构进行解析。

Secondly, a theoretical study of four lariat crown ethers, including one aza-15-crown-5 lariat ether and two aza-18-crown-6 lariat ethers, has been done using density functional theory with B3LYP/6-31G* method in order to obtain some parameters , such as E HOMO, E LUMO, and gap energy, etc.

其次，用密度泛函理论在B3LYP/6-31G*水平上对四个臂式冠醚分子进行了电子和几何结构优化计算。

Both the protection and deprotective group methods for the amino-group on side chain of a new N-pivot lariat crown ether were studied comparatively.

研究了一种新的氮支套素冠醚侧链上氨基的保护和脱保护基方法，结果表明，由过量乙二胺与对甲苯磺酰氯反应得到的单保护乙二胺（N－对甲苯磺酰基乙二胺4a），经N－烷基化环化反应，然后在氢化铝锂存在下脱除保护基，即可制得最佳产率的N－（2－氨基已基）单氮杂－12－冠－4（1）。

It has been known for more than 100 years that substances like ether, laughing gas, chloroform, procaine and the noble gas xenon can serve as anesthetics.

100多年来，我们已经知道乙醚、氯仿、普鲁卡因和惰性气体氙等物质可以充当麻醉剂。

You are such a good friend that if we were on a sinking ship tog ether and there was only one life jacket...

好吧，既然这艘船要沉了，救生衣又只有一件，我就勉为其难的虚伪一下，你对我来说实在是不能再好的朋友了。。。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。