查询词典 si

In addition, the oxidized Si surface can also suppress the formation of the silicide phase.

实验结果还发现，氧化了的Si衬底可以有效抑制硅化铒的生成。

In addition, a self-designed simulant solidification experiment verified this view. The morphology and the size of Si were also studied.

通过自行设计的沉积阶段凝固的模拟实验，对这一机理进行了验证；另外，还对Si相的形态、尺寸进行了一定的研究。

When SiO〓-NH〓-Rh-Co complex was used to catalyze the hydroformylation of methyl methacrylate, an optimal conversion of 93.4% and optimal selectivity of 84.4% for the normal aldehyde were both obtained at Rh/Co ratio of 2/1, which were both higher than that catalyzed by SiO〓-SiNH〓-Rh and SiO〓-Si-NH〓-Co momometallic catalysts. Clearly a synergistic action between Rh and Co atoms presented in the complex.

我们以SiO〓-Si-NH〓-Rh-Co催化甲基丙烯酸甲酯的醛化反应，当催化剂中Rh/Co比为2/1时，催化活性最高，可达93.4％，对正构产物β-甲酰异丁酸酯的选择性达到84.4％，都高于单金属催化剂，表明了金属间存在相互作用。

This invention relates to a new type nanometer crystal Fe-Zr-Nb-Si-Al-Cu series soft magnetic alloy super thin band and its process technology in which, the mother alloy is smelted by vacuum IF induction oven, an amorphous band is processed by a single quick cooling device to be processed by magnetic field heating at last to get the needed product with good soft magnet performance and iron core made by the super thin band improves its magnetic performance greatly.

本发明为一种新型纳米晶Fe-Zr-Nb-Si-Al-Cu系软磁合金超薄带及其制备工艺。由真空中频感应炉冶炼母合金，用单辊冷急装置制得非晶带，最后对非晶带进行磁场热处理，从而制得所需产品。本发明的合金超薄带具有优良的软磁性能，生产成本也较低。由本发明的超薄带制得的铁芯，其磁性能有很大改善，在国防和民用工业方面有广泛用途。

An amophous nano—size Si〓N〓 powder with high purity, good spheroidicity, and an average diameter of d〓=68nm, was prepared by plasma induced CVD method.

采用高频等离子体气相反应法成功制备了纯度高，球形度好，平均粒径d〓=68nm的无定形纳米Si〓N〓粉料。

The rare earth oxide and strontium salt can refine the basic structure 、 firstborn Si phase and firstborn α branch crystal.The dispered oxide grains as the second phases reinforced the alloys.

稀土氧化物及锶盐的加入使基体组织，尤其是初晶Si及初生树枝晶α相得到细化，弥散分布的氧化物颗粒起到第二相强化作用。

We have proposed a solution to control the reaction by reducing the thickness of Ge sublayer and increasing the number of Si/Ge layer synchronously.

提出了降低Ge单层的厚度同时增加Si/Ge的层数以抑制其反应的方法。

In addition, Si-O network was formed on the surface of fillers after hydrolization of TEOS.

正硅酸乙酯水解后在填料表面形成了Si-O网络。

As the table shows, III-V compounds based on GaAs and InSb have far smaller effective masses than tetrahedral group IV materials like Si and Ge.

译 如表所示，III-V族化合物 GaAs 和 InSb 具有的电子有效质量远小于IV族材料如 Si 和 Ge。

Films are obtained via dip-coating process. The results show that the isolated and tetrahedrally coordinated Ti(superscript 4+) which formed Ti-O-Si bondon the pore inner surface of the framework.

实验结果表明，多孔薄膜中的钛离子形成了Si-O-Ti键的孤立四配位形态，使薄膜具有复合型钛离子的催化效果，并且有介孔结构。

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％。