多硫化物

In this paper,the recent developments,synthetic situation and bioactivity of alicyclic polysulfide s are reviewed comprehensively in order to find a simpler and more effective synthesis method.

脂环多硫化物是一种新型香料，具有浓郁的特征香味和良好的生物活性。为了寻找更简单高效的合成方法，推动此类香料的研究，详尽探讨了其研究现状、合成进展及生物活性

Therefore, it is difficult to solve the polymer sulfur within the solution. The only method to avoid passivation of anode is removing the sulfur from anolyte.

因此，除了将高级多硫化物移出电解液，避免大颗粒的α型硫磺S〓的产生，在电解液内部解决阳极钝化的问题极其困难。

ConclusionThe main components of volatile oil of resin and basilar leaves in the Ferula lehmanni Boiss are tuaiacol, terpenoids. Multisulfides have not been determined.

大果阿魏树脂、基生叶的挥发油主要成分是：愈创木醇、萜类化合物，未检出多硫化物。

L the normal zonning in order of greisen type tin deposit 〓tourmalite type tin deposit 〓 cassiterite quartz type tin deposit 〓cassiterite sulfide tin deposit copper-lead-zinc 〓 sulfide deposit 〓lead-zinc sulfide deposit 〓antimony deposit, which may be related to the high-level em placement of the intrusions;2 the reversed zoning in order of lead-zinc deposit 〓copper-lead-zinc deposit 〓tin polymetallic deposit, which may be result from the descending of heat centre of the intrusions with their cold and solidification.

该成矿系列的矿床在空间上有序分带，即以岩体为中心的顺向分带为：云英岩型锡矿床〓电英岩型锡矿床〓锡石石英型锡矿床〓锡石硫化物型锡矿床〓铜铅锌金属硫化物矿床〓铅锌硫化物矿床〓锑矿床，逆向分带为：锡多金属矿床〓铜铅锌硫化物矿床〓铅锌硫化物矿床，造成这种分带现象的内在因素是高热能且富含矿热液的黑云母花岗岩的高侵定位和岩体热中心的向下移动。

Results show that sulfides can be refined and disperse evenly after continuous multi-pass rolling, with the average width of sulfides being 4.91μm, the average length being 14.27μm, the average aspect ratio being 3.03, and the average area being 44.72μm2. The sulfides can refine the microstructure due to their pinning effect, and the reefing effect shows Zener relation.

结果表明，连续、多道次变形的轧制工艺能够使硫化物破碎并均匀弥散化，硫化物平均宽度4.91μm，平均长度14.27μm，平均长宽比3.03，平均面积44.72μm2；硫化物组织细化的原因是作为第二相粒子钉扎晶界，硫化物颗粒细化组织满足Zener关系。

Keywords polypropylene fibre; sailcloth ;coating finish;natural latex;multi-sulfide;dip-coating

聚丙烯纤维；篷帆布；涂层整理；天然胶乳；多硫化物；浸渍涂层

The major methods involved in this paper are cyanidation,thiocarbamide process,thiocyanate process,thiosulfate process, multi-sulfide process,haloid process,and other reagents procss;the advantages and disadvantages of the methods as well as the suitability of these methods for treating various silver bearing ores are generally analyzed.

综述了国内外关于银浸出技术的各种方法，主要内容包括氰化法、硫脲法、硫氰酸盐法、硫代硫酸盐法、多硫化物法、卤化物法和其他试剂法等，简要分析了各种方法适用的含银矿石及其利弊。

The main measures of prevention polysulfide produce and elimination its influences on gasoline copper corrosion were to increase pH value of gasoline water washing environmental, to decrease oxygenous carrying in compression unstripped gas and to carry out alkali liquor replacement.

防止多硫化物产生、消除其对汽油铜片腐蚀的影响主要措施有：提高汽油水洗环境的pH值；减少压缩富气中氧气的夹带；碱液置换。

A primary seal of polyisobutylene and a secondary seal of polysulphide, polyurethane or silicone ens

中文名称：初步是由聚异丁烯来密封，然后中级密封由多硫化物，聚亚安酯或硅树脂来完成以确保双层玻璃密封的持久性和有效性。

Influences of hydrogen sulfide, element sulfide, mercaptan, sulphuring ether, disulfide individually on silver strip corrosion of jet fuel, and of element sulphur coexisting with other sulfide on silver strip corrosion of jet fuel were studied.

考察了硫化氢、元素硫、硫醇、硫醚、多硫化物等单独存在时对喷气燃料银片腐蚀的影响；同时研究了元素硫与其它硫化物以不同浓度混合时对喷气燃料银片腐蚀的影响。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。