查询词典 si

The high K calc-alkaline series is rich in Si, K, and poor in Mg, Fe, Ca, Al. The shoshonite series and alkaline series are rich in K,Al,Ti and poor in Si.

高钾钙碱性系列富Si、K，贫Mg、Fe、Ca、Al；橄榄安粗岩系列和碱性玄武岩系列富碱，尤其富K，富Al、Ti，贫Si。

Investigating the influences of processing parameters on the C/Si molar ratio of resulted nanosized SiC powders indicated that there was a direct pyrolytic reaction from DMS to SiC as well as the previous proposed two-step reaction. Under the optimized processing conditions, the silicon carbide powders of homogeneous particle size distribution, spherical shape and stoichiometrical C/Si molar ratio are obtained. The silicon carbide particle consists of β-SiC crystallite arranged randomly.

论文系统研究了工艺条件对产物粉体C／Si摩尔比、粉体颗粒尺寸和组成粉体的SiC微晶尺寸的影响；研究了粉体制备过程中可能发生的化学反应，提出了反应过程中除了分步进行的生成SiC的反应外，同时在高温区还存在一步完成的生成SiC的化学反应的观点；通过调整工艺参数，制备得到了粉体尺寸分布均匀、呈均匀球状、C／Si摩尔比符合化学计量比的颗粒尺寸为40nm的纳米SiC粉体。

The vasomotion was induced by noradrenaline in vivo, then the changes of vasomotion after injecting SI and Na-monomethyl-L-arginine （L-NMMA, a NO synthase inhibitor） were measured respectively on a TV monitor using a TV camera mounted on the microscope, and the influence of L-NMMA on effect of SI was also observed.

在活体情况下运用去甲肾上腺素（noradrenaline，NA）血管运动诱导法诱导出血管运动，分别观察静脉注射N^G-单甲基-L-精氨酸（NG_monomethyl.L-arginine，L-NMMA）、SI后血管运动的变化及应用一氧化氮合酶抑制剂L-NMMA对SI作用的影响，摄录结果于监视器上用暂停功能测量。

The role of single wettable Ni and Si、non-wettable SiC and complex SiC+Ni、SiC+Si coatings in Al/C composites on interface wettability、interface reaction and properties of composites was systematically studied in this paper.

论文系统研究了单一润湿涂层Ni、Si，非润湿涂层SiC和复合涂层SiC+Ni、SiC+Si在Al／C复合材料中对界面润湿、界面反应和性能的作用。

By contrast with the conventional 3C-SiC growth on carbonized Si, we found that SiC on AlN/Si has hexagonal structure.

我们发现与传统的通过Si衬底表面碳化只能获得立方相不同，在AlN/Si上所生长的SiC具有六方相结构。

The main reasons bring hardness remarkable improvement are disperse reinforcement of un melt SiC and propitiation FeSiC, and solution reinforcement of decompounded Si, C.

造成熔覆层硬度显著提高的原因是未熔 Si C，析出相 Fe Si C的弥散强化和熔入的 Si，C元素引起的固溶强化作用。

The optical properties of PS mentioned above were discussed based on the quantum effect theory, nucleation theory of PS, and the variation of Si-H, Si-H2 absorption lines.

结合多孔硅的成核理论、量子限制理论以及红外光谱中Si-H、Si-H2键红外振动峰的变化解释了上述现象。

The influences of the Si removal time on the final phase composition and mechanic properties of the formed biomorphic Si/SiC ceramic composite were analyzed.

结果表明，最终产物由主晶相β-SiC和少量Si组成，控制高温排硅时间可以得到孔隙率为16%~32%的多孔Si/SiC生态陶瓷，可调控其产物的相组成和力学性能。

P and 〓Si MAS NMR results show that both Si-OH groups on the pillars and P-OH groups on the layers react with Cr〓 to form Si-O-Cr and P-O-Cr bondings in Cr〓O〓-SiO〓-ZrP, resulting in a more homogeneous dispersion of the chromium oxide in the interlamellar region.

用〓P和〓Si NMR表征时同样观察到传统方法中氧化铬主要与硅柱作用，与层板几乎不作用，而新方法中氧化铬与层板和硅柱均有强相互作用，使氧化铬更均一地分散于层间区域。

This was attributed to the variation of the interaction betweenadjacent H-Si-Si-H dimers with the temperature.

这是首次从实验上观察到H-Si-Si-H双体之间的相互作用对表面电子态的影响。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。