查询词典 sic

However, there was a significant difference in quantity of SiC and Si3N4 which is accompanying product from the different bituminous coal.

用3种烟煤与SiO2在氮气保护下合成SiC，发现烟煤可以作为碳源合成SiC，但不同烟煤煤种合成产物差别很大。

In comparison with the switches based on other polytypes of SiC, the design benefits from having fewer lattice mismatches between the SiCGe and 3C-SiC. A maximum common emitter current gain of about 890 and superb light-activation characteristics may be achievable. The performance simulation demonstrates that the device has a good I-V characteristic with a turn-on voltage knee of about 4V.

结果表明，与采用其他结晶类型的碳化硅衬底相比，SiCGe与3C-SiC间较小的晶格失配有利于提高器件性能，可使其最大共射极电流增益达到890，获得最好的光触发特性和较好的I-V特性，饱和压降大约为4V。

In the compound produced by the planar device, there are even SiC whiskers found with length longer than 1 micron and diameter less than 30 nanometers.

冲击合成的SiC产物晶粒细小，而且在平面冲击波合成产物中观察到长度超过1微米、直径小于30纳米的SiC晶须。

The elevated temperature strength of Al_4C_3 dispersoid and SiC particulate reinforced aluminum composite is superior to that of SiC whisker reinforced 2024Al composite.

在Al_4C_3／Al复合材料的基础上加入SiC颗粒可以提高复合材料的弹性模量并进一步降低其热膨胀系数。

The formation of interface reaction layer improves the bonding strength between SiC particles and steel matrix, and decreases the thermal stress caused by the difference of elastic modulus and thermal expansion coefficient.

界面反应层的形成改善了SiC颗粒与钢基体的结合强度，并减小由于SiC颗粒与钢基体之间弹性模量和热膨胀系数差异而引起的热应力。

An Al base composite material reinforced by nanometre sized SiC particulates has been prepared by using powder metallurgy technique. Its microstructure and properties were examined in comparison with similar composite reinforced by SiC particulates sized in micrometre.

用粉末冶金方法制备了纳米尺寸SiC颗粒增强铝基复合材料，并将其组织及性能与相同工艺制备的纯铝和微米尺寸SiC颗粒增强的铝基复合材料进行了对比。

The gas-to-powder conversion is carried out following the route: DMS pyrolyzes and forms product molecule and molecular clusters, the product molecular clusters that grow to and above the critical size by random collisions with molecules and other clusters become elementary particles, the elementary particles grow further by collisions and fusion with molecules, clusters and other elementary particles to form resulted SiC particle.

论文采用TEM、HREM、XRD、IR、NMR、中子衍射、Raman光谱和定量化学分析、光透沉降粒度分析等手段，对制备得到的纳米SiC粉体进行了系统表征研究，并研究了SiC纳米粉体的成核、生长、晶化过程和机制，指出化学气相反应法制备SiC纳米粉体的过程是一个均匀成核→核子生长形成初始颗粒→初始颗粒熔融碰撞→产物粉体的过程。

The results show that though TiN and SiC monolayers exist as nanocrystal and amorphous respectively, the nanomultilayers grown by alternative depositing of TiN and SiC form columnar crystal with intensive preferred orientation.

结果表明，尽管TiN和SiC的单层膜分别以纳米晶态和非晶态存在，但由TiN和SiC通过交替沉积形成的纳米多层膜却能够生长成为晶体完整性良好的柱状晶并呈现强烈的择优取向，显示了一种异质材料晶体生长的相互促进作用。

Then silicon carbide crystal was grown by the sublimation method under a low pressure and high temperature region. The decomposition reaction of SiC was simulated according to the thermodynamic theory. The result shows that the dominating species under thermodynamic equilibrium are Si,SiC2 and Si2C at about 2300℃.

摘 要：采用高纯Si粉和C粉在适宜的温度和压力下合成了多晶SiC粉末，在此基础上采用升华法在低压高温下条件下生长了大直径6H-SiC单晶，并根据热力学理论分析了SiC的分解。

Using plasma cladding technology, different content SiC ceramic powder and Ni-based self-fluxing powder on W6 steel were plasma-claded in order to obtain Ni-based SiC alloys coating.

为了制备符合热锻模使用性能要求的模膛表面强化层，采用等离子熔覆技术，以W6为基体，在基体表面对不同含量SiC陶瓷粉末、Ni基自熔性粉末进行等离子熔覆，得到Ni基SiC合金涂层。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了