查询词典 hydrogen chloride

This acid is very corrosive to most metals; therefore, leak s of hydrogen chloride will tend to escalate with time.

这种酸对大多数金属具有极强的腐蚀性；因此，氯化氢的泄漏会随时间逐步增加。

When using hydrogen chloride in processes that require continuous flow for long periods of time, the valve should be cycled on a weekly basis.

当在长时间需要连续流量的过程中使用氯化氢时，阀门应该每周循环一次。

Hill Camellia can resist sulphur dioxide, hydrogen chloride and nitric acid fumes and other hazardous materials violations.

山茶花能抗御二氧化硫、氯化氢和硝酸烟雾等有害物的侵害。

And reacting the phosphorous pentafluoride with the lithium chloride in a hydrogen fluoride to prepare the lithium hexafluoro phosphate.

b使氟化磷与氯化锂在氟化氢中发生反应，制备六氟磷酸锂。

Determination of hydrogen chloride in air by ion chromatography was developed, the collection of sample and conditions of determination were investigated.

用离子色谱法测定环境空气样品中的氯化氢，建立了该空气样品的氯化氢采集和离子色谱分析的条件，并将该分析方法与常用的硫氰酸汞分光光度法相比，具有操作简便、快速、灵敏度高的特点。

Methods The porous glass plate absorber valve was used to sampling, the contents of hydrogen chloride and sulfate was determined by hydronium chromatography method at the best determination condition and suitable mobile phase.

以多孔玻板吸收管采样，离子色谱法测定，选定最佳测定条件，确定适宜的流动相，测定氯化氢和硫酸的含量。

Said method includes the following steps: firstly, adopting dipotassium hydrogen phosphate, magnesium sulfate, calcium chloride, citric acid, ammonium ferric citrate, disodium EDTA, sodium carbonate and minor element solution A5 to prepare culture liquor of nostoc according to a certain ratio; then controlling temp. light intensity and deration condition of the culture liquor to make culture of nostoc; third ste, harvesting nostoc; fourth ste, extracting nostoc polysaccharide; and fifth step, purifying, harvesing and drying nostoc polysaccharide.

首先是配制葛仙米培养液：采用磷酸氢二钾、硫酸镁、氯化钙、柠檬酸、柠檬酸铁铵、乙二胺四乙酸二钠盐、碳酸钠，微量元素溶液A5按比例配制；其次是葛仙米的培养：控制温度、光强、光质、培养液通气条件；第三是葛仙米的收获；第四是葛仙米多糖的提取；第五是葛仙米多糖的纯化、收获与干燥。

Hydrogen chloride is nonflammable; use extinguishing media appropriate for surrounding fire.

氯化氢是不可燃的；使用适合于周围火焰的灭火媒体。

Picoline was treated with hydrogen peroxide to form intermediate N-oxide-3- methylpyridine then chloridized with benzoyl chloride to form 2-chloro-5-methylpyridine.

以3-甲基吡啶为原料通过过氧化氢氧化得中间产物3-甲基吡啶-N-氧化物，再用苯甲酰氯氯化得到粗产品2-氯-5-甲基吡啶。

Liquid-phase epoxidation of allyl chloride with hydrogen peroxide was carried out over Ti-MWW, a novel titanosilicate with the MWW structure, to synthesize epichiorohydrin selectively and effectively. Ti-MWW proved to be superior to the conventional TS-1 catalyst in both catalytic activity and product selectivity. Ti-MWW prefers aprotic solvents of acetone and acetonitrile, both of which can restrain the solvolysis of epichiorohydrin, whereas TS-1 favors a protic solvent of methanol.

研究了具有MWW结构的新一代钛硅分子筛Ti-MWW催化剂对烯丙基氯液相环氧化高效合成环氧氯丙烷的催化性能结果表明，Ti-MWW的催化活性以及产物选择性均优于传统的钛硅分子筛TS-1，对于Ti-MWW，合适的溶剂为非质子性溶剂丙酮和乙腈，在该溶剂中环氧化物不易发生溶剂化开环反应；而对于TS-1，合适的溶剂是质子性溶剂甲醇，但甲醇可导致醇醚副产物的生成。

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。