查询词典 si-steel

Half stitches , quarter stitches and three-quarter stitches are often called fractional stitches because they are divi si ons of the cross stitch.

半针， 针季度和三季度的针通常被称为分数针，因为他们是十字绣分歧。

Five novel torsion-mirror optical actuators including double-beam thickness differential structure with single torsional axis, double flexible folded-beam structure with single torsional axis, double-beam vertical torsion comb structure with single torsion axis, four-beam differential compound-micromirror structure with double torsional axis and the combined structure of the four basis forms above, are brought forward. All of these devices could be fabricated by the same silicon micromachining process we have developed. The deformation compensation design with local enhancement for the thin torsional beam which is the key structure of these devices is also put forward to improve the reliability. The three-dimension solid model and two-dimension reduced order model of the torsion-mirror optical actuator are established and then the numerical simulations for evaluating the device characteristics of the statics, dynamics, electrostatic field, mechanical and electrostatic coupling, fluid and solid coupling are carried out to optimize the structure design. Furthermore, three optical fibre clamping structures which could be integrated monolithicly are designed and analyzed to improve the optical coupling capability. 4. Three flexible process flows combined with bulk silicon micromachining and surface silicon micromachining are brought forward to fabricate these novel single-crystal silicon or polysilicon torsion-mirror optical actuators by using the same lithography masks for both SOI wafer and regular silicon wafer. A series of important process experiments are carried out to optimize the process parameters and the process flows. Some novel and typical process phenomena which occurred during the microfabrication are analyzed and then the corresponding solutions are put forward. 5. A MEMS dynamic testing system which exploit blur image synthetic technique, stroboscopic image matching technique, stroboscopic mirau microscopic interferometry technique and microscopic laser dopper vibrometer technique is set up to measure three-dimension and six-freedom micro motions of any MEMS devices with nanometer resolution.

在对硅微机械扭转镜光致动器的光机电特性系统地理论研究的基础上提出了硅微机械扭转镜光致动器的结构设计准则。3、提出了单轴双梁厚度差分结构、单轴双柔性折叠梁结构、单轴双梁垂直扭转梳齿结构、双轴四梁差动复合微镜结构以及以上四种基本结构组合后的衍生结构等五种工艺加工技术兼容的新型的硅微机械扭转镜光致动器，对器件关键结构薄厚度、高耐疲劳扭转梁进行了局部加强的变形补偿设计，建立了器件的三维实体模型以及两维降阶模型，对提出的新结构硅微机械扭转镜光致动器进行了系统的静力学、动力学、静电场、力电耦合和流体固体耦合的建模仿真与优化设计，同时设计并分析了三种可实现单芯片集成的弹性光纤定位夹紧结构。4、提出了组合体硅微加工技术与表面硅微加工技术、兼容同一套光刻版图、可分别基于SOI 晶片和普通Si 晶片、适应于制造提出的各种新结构单晶硅和多晶硅硅微机械扭转镜光致动器的三套柔性加工工艺流程，开展了一系列重要工艺步骤的单项工艺试验，对工艺流程与工艺参数进行了优化，针对加工过程中出现的具有普遍意义的典型工艺问题进行了讨论和分析，并提出了解决方法。5、创新性地将模糊图像合成技术、频闪图像匹配技术、频闪Mirau 显微干涉技术与显微激光多普勒测振技术有机结合，建立起了一套周期运动测量与瞬态运动测量相结合、单点运动测量与全视场运动测量相结合、满足不同MEMS 器件各种动态测试要求的集成的MEMS 三维六自由度微运动精密测量系统。

In this paper, using Doppler broadening positron annihilation technique investigates the effect of multiple implanting and oxygen concentration variation during.

通过多普勒增宽正电子湮没测试，不同剂量和能量注入、退火后的样品其顶层Si中的氧相关缺陷有着不同的性质。

In present work, the coincidence Doppler broadening spectra of positron annihilation radiation of NiTi, NiAl alloys, single crystal of Si, and pure metals, such as Fe, Co, Al, Nb, Cu, Ni, Ti have been measured.

利用正电子寿命谱参数研究了NiTi合金马氏体转变及其奥氏体转变过程中的微观缺陷和电子密度的变化，从而揭示NiTi合金马氏体转变的微观机制。

The Ethiopia covers with tiles the word of cite place official says center of Er tower information that day, this year in August, be in dust capital inferior the area of all alone collect that Si Yabei Ba Yina makes an appointment with 500 kilometer, a flock of lions assault the livestock that local farmer and they feed suddenly again and again, rush into dorp to have a person even.

埃塞俄比亚瓦尔塔信息中心当日援引地方官员的话说，今年8月，在埃首都亚的斯亚贝巴以南约500公里的索罗地区，一群狮子突然频频袭击当地农民和他们饲养的牲畜，甚至闯进村落吃人。。。。。。

The slag complex coagulant has double functions of high absorption and coagulation.

该矿渣复合混凝剂具有高效吸附和混凝(Al、Fe、Si起作用)的双重作用。

" Mei Yiqi's Liang Sicheng to throw on the table in the drawing of a clean up, and calmly looked at each other:"Si Cheng, the national crisis take the lead, you can not be understanding about it

梅贻琦把梁思成扔在桌子上的图纸一张张收拾好，冷静地望着对方：思成，国难当头，你就不能谅解一下吗？

I had grown up in Si-Zhan province and had had no experience of driving in the snow.

我在四川长大，没有任何雪地驾车经验。5000公里的行程，一路安全，对我来说真是一个奇迹。

The former is to prepare polymolybdates coordinated' directly by organic ligands using Na2MoO4 and MoO3 precursors; The latter plays emphasis on exploiting a simple and effective routine to synthesize Keggin polytungstates in which the transition metal or Si acts as the heteratom by reaction precursor Na2WO4.We have synthesized a 4,4'-bipyridine bridging dumbbell-like polymolybdates a metatungs...

前者主要是制备有机配体键合的多金属钼酸盐；后者重点是探索出一个简易、有效的合成过渡金属或主族元素硅作杂原子的Keggin多金属钨酸盐的方法，然后通过变换过渡金属或有机配体的种类探讨对产物结构的影响，再对所得化合物的结构和组成通过物理测试手段进行表征，同时研究其在光、电、磁等方面的性质。

The series of dynamoelectric tools which were gathered outstanding technology of international si mila r products own many national patents.

公司生产的压刨、平刨、组合刨等系列电动工具产品，广集国际同类产品的优秀技术，并拥有多项国家专利。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。