硅

Our company is one of the national technology standard framers about high pure tetrachloride silicon used in fiber and high pure tetrachloridesilicon used in semiconductor extension.

公司创建于一九九零年十月，是上海唯一专业生产高纯四氯化硅厂家，年产PPM级/700吨，年产PPB级/150吨，是全国最大的四氯化硅的生产基地。

However, commercial grade silicon tetrachloride contains impurities which increase the optical loss.

四氯化硅是生产石英通信光纤的主要原料，但粗四氯化硅中含有多种杂质，直接影响光纤的损耗特性。

The standard sample of high pure silicon tetrachloride with certified value of 99.99 % was analyzed. The obtained average determination result was 99.857% after normalization treatment. The relative standard deviation was 0.03%.

对认定值为99.99%高纯四氯化硅标准样品分析，归一化法定量，得到该样品中四氯化硅的测定平均值为99.857%，相对标准偏差为0.03%。

Tetraallylsilane was synthesized by one-step approach through the reaction of silicon tetrachloride with the partially solvated Grignard reagents formed in situ from allyl bromide and magnesium in the mixed solvents of toluene and ether.

采用一步合成方式，将3-溴丙烯与金属镁在以甲苯和供电子溶剂构成的混合溶剂中进行反应，继而与四氯化硅反应，成功合成了四烯丙基硅烷，其产率在乙醚与3-溴丙烯的摩尔比为4(V甲苯/V乙醚=1·1)时达到极值，超过了91%。

Dicyclopentyldimethoxysilane was synthesized by the addition of silicon hydride method and the reaction conditions were studied.

介绍了以二环戊基二氯硅烷为中间产物合成二环戊基二甲氧基硅烷的方法。

Among all silicon-source compounds used as electronic gas, silicon hydride is preferred for its many characteristics.

在众多电子气体中，同其它硅源化合物相比，硅烷因独具许多特性而被优先使用。

This paper is studied on a new synthesis method of epoxy-modified organic silicone micro-emulsion by one step with a silane-alkyl coupling,silicon hydride resin acceptor while opening-cyclo polymerization of the octa-methyl cyclo tetra siloxane,thus the optimal manufacturing conditions are determined by comparing test of their properties.

采用偶联剂缩水甘油醚氧丙基三甲氧基硅烷、八甲基环四硅氧烷开环聚合，探索一步合成环氧基改性有机硅微乳的新方法，通过其性能测试得出最佳工艺条件。

While the sample was dissolved in nitric acid and hydrofluoric acid, the silicon in sample was removed through evaporating in the form of silicon fluoride. As a result, the matrix interference was eliminated, and meanwhile the high blank value as well as the influence on the life span of graphite tubes due to perchloric acid was avoided.

使用硝酸和氢氟酸消解样品，使硅生成氟化硅蒸发掉，消除了基体的干扰，也避免了使用高氯酸作为消解试剂所引起空白值高及对石墨管寿命的影响。

The effects of copper and silicon on matrix structures and mechanical properties of as-cast ductile iron well frame casting were studied and the role of Si and Cu on the as-cast ductile iron was analyzed.

研究了铜和硅对铸态球铁井圈基体组织和力学性能的影响，并对铜和硅在铸态球铁中的作用机理进行了分析。

Silica sand and High-pure Silica brick is almost in the same situation.

硅砂和高纯硅砂更是如此，市场前景广阔。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。