查询词典 Si

The comparison of hydrolysis-polycondensation reaction and microstructure of ORMOSILs derived by TEOS, MTES, VTES, ETES confirms that the influence of organic group such as methyl, vinyl, ethyl and ethoxyl on the hydrolysis and polycondensation reaction rate depends on several factors including electron-donating capability, size and number of ethoxyl group which can participates polycondensation reaction.

确认甲基、乙烯基和乙基和乙氧基等改性基团对硅醇盐水解-缩聚反应速度的影响是取决于有机改性基团的电负性、尺寸和可水解的-OR基团数目等因素综合作用的结果，其水解速度依MTES＞TEOS＞VTES＞ETES的顺序递减。由于Si原子上可聚合的基团数目减少，导致MTES、VTES和ETES的聚合反应速度降低，而与水解速率失配。

It was shown that MFI/MFI core-shell zeolite with high Si/Al shell could be synthesized by using ethylamine rather than TPAOH as organic template under mild hydrothermal conditions.

考察了晶化温度和晶化时间对高硅壳层MFI/MFI核壳型沸石分子筛的合成的影响，其适宜的合成条件为晶化温度高于130 ℃，晶化时间19 h。

In chlorination, conversion of Si-H groups reaches 90% and active groups, such as ethynyl, keep unchanged.

表征结果显示，硅氢基团的转化率达到90％，炔基活性基团未发生变化。

It is abserved that eutectic Si phases are found to be nucleated by the surface of SiC particles.

在研究中还发现，SiC颗粒可以作为共晶硅异质生核的衬底。

Exanthema rash, named Si-yi refers to the risk of infant acute rash diseases, generally six months or so for a small baby.

幼儿急疹，故名思义是指婴儿所患的急性出疹性疾病，一般多为半岁左右的小婴儿。

The results show that Si phase is fine and dispersion, the microstructure of performs from spray forming is fine and uniform, the thermal expansivity is about 9×10-6~10×10-6/K, and the thermal conductivity is about 110W/.

研究结果表明：材料显微组织细小，一次硅相尺寸约为10μm，且均匀弥散分布，该材料的热膨胀系数为9×10-6~10×10-6/K，热导率约为110W/，是一种理想的电子封装材料。

Face centered cubic and hex TaN films were observed forming on 20 steel and Si sheet.

薄膜较致密且均匀，与基体的结合好。

Tourist attractions hasling yan si , fairy bridge, ancient stone, One-Line-Sky Taihang valley.

旅游景点有灵岩寺、仙人桥、古石、太行狭谷一线天。

Pour savoir si ton couple est solide, fais le test de passer un week-end en tête à tête avec ton chéri, sans potes, sans DVD, sans musique... Le moment de vérité!

为了了解你的另一半是否真的坚定，在周末的一个晚上做个小测试，和你的爱人面对面，没有琐事，没有DVD，没有音乐，来一个真实的时刻！

The level of SI at the fastigium stage of the disease was significantly higher as co...

结果提示重型肝炎病人可出现高胰岛素血症，其严重程度对判断患者病情及预后有一定的参考价值。

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。