硅的

The rubber compound comprises a rubber which has at least two functional groups which can be cross-linked by hydrosilylation, a cross-linking agent consisting of hydrosiloxane or a hydrosiloxane derivative or a mixture of several hydrosiloxanes or derivatives, which comprise at least two SiH-groups per molecule in the centre, a hydrosilylation catalyst system, at least one filling material and a coagent which can be cross-linked by hydrosilylation.

为此该橡胶混配物包括：具有至少两个可通过氢硅烷化交联的官能团的橡胶；作为交联剂的氢硅氧烷或氢硅氧烷衍生物或者由数种氢硅氧烷或其衍生物组成的混合物，所述氢硅氧烷或其衍生物平均每个分子具有至少两个SiH基团；氢硅烷化催化剂体系；至少一种填料；和可通过氢硅烷化交联的助剂。

The Si/Al ratio of NaY molecular sieve was determined by an empirical formula of lattice constant obtained by extension function method of X-ray diffraction and framework Si/Al ratio of NaY molecular sieve determined by solid nuclear magnetic resonant spectrum method.

前言晶胞参数是决定晶体结构的重要参数之一，Na Y超稳分子筛属立方晶系，由于 Na Y超稳分子筛骨架硅铝比受许多条件的影响，如投料比、晶化温度、晶化压力和晶化时间等。通过研究发现分子筛骨架的硅铝比与其晶胞参数相关，而分子筛的硅铝比可作为合成分子筛产品质量的控制指标 [1] 。

This article reviewes the recent progress in applied research of several typical preceramic polymers,including polycarbosilane,polysilazane,polysiloxane, polysilane ,etc,which were used in the preparation of ceramic materials.

概述了几种典型的陶瓷先驱体聚合物聚碳硅烷、聚硅氮烷、聚硅氧烷和聚硅烷等在陶瓷材料制备中的应用研究进展，重点阐述了在该领域所取得的研究成果，并针对目前存在的不足提出了今后的研究方向。

Silicon powders were mixed with pore-forming agent of 30wt% and agglomerant of 1wt% and shaped into discs of Φ70 mm×5 mm by mould pressing under pressure of 40 Mpa.

通过添加30wt%的成孔剂颗粒，制备出孔隙率在55%左右的具有宏观球形孔的多孔氮化硅陶瓷。反应烧结前，在低于硅熔点的温度下，对多孔硅坯体进行不同温度和不同时间的预烧。

The effect of silicon atom in substrate on the reaction rate and the stereoselectivity of enzymatic reactions was revealed by comparison of horse liver alcohol dehydrogenase-catalyzed stereoselective dehydrogenation of the three isomers of acetyltrimethyl propanone and their carbon analogues in aqueous/organic biphasic systems.

本项目通过对比在水－有机溶剂两相系统中，马肝醇脱氢酶催化三甲基硅烷丙酮的三个异构体及其碳类似物的光学选择性脱氢反应，揭示了底物中的硅原子对酶反应速度、立体选择性的影响规律，成功地合成了高对映体纯度的手性有机硅醇，并实现了辅酶的再生。

The relationship of the amounts of emulsifier, organosilicon monomer (D4) and initiator with the ratio of fluorescence intensity between first vibronic peak of pyrene (λ= 373 nm) and third vibronic peak of pyrene (λ=384nm)Ⅰ1/Ⅰ3 were discussed during the emulsion polymerization process, in which pyrene was used as fluorescence probe. The polymerization behavior of the organosilicon-acrylate latex with core-shell structure was investigated in line with the relationship of monomer conversion and development of morphology in latex particles with the value of Ⅰ1/Ⅰ3 for probe pyrene during the polymerization process.

以芘为荧光探针，探讨了有机硅-丙烯酸酯核壳乳液聚合过程中，芘的第一振动峰(373nm处)与第三振动峰(384nm处)荧光强度的比值Ⅰ1/Ⅰ3与乳化剂、有机硅单体（D4）和引发剂用量之间的关系，并结合聚合过程中探针芘的Ⅰ1/Ⅰ3 峰值与单体转化率及乳胶粒形态演变之间的关系，研究了核壳结构有机硅-丙烯酸酯乳液的聚合行为。

The growth mechanism of silver seed on silicon has been presented: at first, the silver monolayer and multilayer firstly grows onto silicon without fully covering the surface at the expense of silicon etching due to the silver seed attracting the electron from silicon, after that, the monolayer coalesces together, forming continuous grain film with some silver atoms diffusing into the silicon and the multilayer still grows thick simultaneously.

提出了银晶籽在硅表面的生长机理是：首先是在硅表面没有被完全覆盖的情况下，单层银晶籽生长的同时伴随有多层的生长，此后单层逐渐形成连续的薄膜，在单层晶籽层上多层薄膜逐渐增厚，并伴随有部分银原子向硅中的扩散。

The protection of wollastonite needle crystal structure were from crush stage by use the long jaw type crusher.The forces dinted on the mineral are mainly squeeze and friction,avoided smashing,so the needle crystal structure of minerals can protect availably.

对制备超细高长径比硅灰石的研究从破碎阶段开始就注重对其针状晶体的保护，采用长腔颚式破碎，使破碎作用于硅灰石矿物上的力分别以挤压力和摩擦力为主，避免过粉碎，可有效的保护粗颗粒硅灰石的针状晶体结构。

Improved to the careless use of Silicone Grease, Silicone Grease result is usually improved by adding carbon (such as pencil refillable powder) and the metal powder, when the conductive Silicone Grease with the ability to run on the computer to the CPU when the permeability surface slot of the capacitance and lead to disastrous consequences.

改良的硅脂更要小心使用，因改良的硅脂通常是以加入碳粉和金属粉末，这时的硅脂有了导电的能力，在电脑运行时渗到 CPU 表面的电容上和插槽后果不堪设想。

The reaction result showed that the reactivity of Grignard reagent was different in THF and diethyl ether when subjected to substitution reaction, which gave three products with different substitution degree.

研究表明，生成的Grignard试剂在THF和乙醚中的反应性不同，与甲基三硅烷或四乙氧基硅烷发生取代反应时生成不同取代度的产物，控制反应条件可得到以单取代、双取代或三取代硅烷为主的产物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。