查询词典 si

According to the transnational periodically symmetry of crystal plane in its space,the author introduce the Thomas-Fermi equation in crystal planar channeling electric fields;then calculate the electric fields of single crystal Si(110)and its critical angle.

根据同一晶向的晶面具有平移周期对称性，将托马斯费米方程引入晶体的平面沟道中求解Si(110 )平面沟道内的电场；然后把求得的结果用于计算平面沟道临界角。

At that time, I and a bunch of junior partner, Si Hun in a day, weekend or summer vacation, that tall and sturdy plane trees or paulownia tree, it becomes us to play these mischievous ghosts paradise.

那时，我和一帮小伙伴，整天厮混在一处，周末或暑假，那高大粗壮的梧桐树或泡桐树下，就成了我们这些调皮鬼玩耍的乐园。

Adding minor Mn and Cr to Al-Mg-Si alloy can improve the tissue at as-cast treatment. The transformation of the platelike ?

含Mn、Cr相的弥散质点可阻止合金热挤压过程中的再结晶，得到纤维状组织，并促进细小时效强化相β′的析出，从而强化了合金。

Shidao mostly Ban Yuexing, double shoot-hole, the shape of modern production of compact and sophisticated study by the North Valley Qia iron knives; Shi Si is a tool to dig soil, shape, as some of the willow pattern, and some may wish shoe-shaped, pointed a majority of the Department of After traces of the use of polished, its role in the modern equivalent of iron Plowshare.

石刀大多为半月形，双笋穿孔，制作小巧精致形似近代北方习用的铁制掐谷刀；石耜是一各掘土工具，形状有的象柳叶，有的似鞋底形，尖部大多有使用后磨光的痕迹，其作用相当于近代的铁犁铧。

By using the calculated results of EET theory, the local valence electron structure elements of residual chemical bonds of Al-Si and Mg-Al alloy melts, that is, the residual bond structure models, were established. From the viewpoint of effect of pressure on melt structure, the essential reason of deviation phenomenon for maximum solution point and eutectic point in thermodynamics equilibrium phase diagram was analysed. Moreover, under pressure condition, the change of thermodynamics equilibrium phase diagram was macroscopic reflection of microstructure change of alloy melt.

运用固体与分子经验电子理论的计算结果分别建立Al-Si、Mg-Al两种合金熔体的剩余化学键的局域价电子结构基本单元即残余键结构模型，从压力对熔体结构作用的层面，分析热力学平衡相图中最大固溶点和共晶点发生偏移的本质原因，并指出压力作用下热力学平衡相图的变化是合金熔体微观结构信息变化的宏观反映。

It may be that, Li Si was the creation of a totalitarian bureaucracy to adapt to the principles of the ideology of the "power," Zhang was very difficult to maintain a balance, only to Confucian political theory and the principles of bureaucracy between the shoulder looking for a recovery co-ordination The new point of "duty."

或许可以这样认为，李斯获得了创立一种适应专制官僚制原则的意识形态的"权力"，张居正却只能在很难维持平衡的儒家政治理论与官僚制原则之间担负着寻找一个恢复协调的新的基点的"义务"。

This paper discusses the analysis of non-metal elements by following ways:Determination of P,S and Si by IC P-AES;Determination of Cl,P and S by IC ;Determination of trace As by polarograph and HG-AFS;Determination of Se by IC P-AES and fluorometry;Determination of F,Cl and I by GB.

本文论述了川附子非金属元素的分析：用ICP—AES法测定S、P和Si；离子色谱法测定Cl、S、P；极谱法和HG-AFS法测定痕量砷；ICP-AES和荧光法测定硒；GB法测定氯、氟和碘。

Further study by HRTEM shows that SiC grown on AlN/Si (111) belongs to the 2H-SiC polytype.

透射电子显微镜研究证实在AlN/Si(111)上的SiC为2H变体，类似结论国内外尚未见报道。

The experimental results show that the content of SiC in RBSC increases with carbon content while α-SiC is chosen as a filler. However, the residual carbon would appear in specimens when the carbon content exceeds 30% by weight. Using carbon felt, the reaction-formed SiC particles are small and uniform in size and distribution. However, when carbon felt is impregnated with phenol resin, the reaction-formed SiC is nonuniform in size and distribution. X-ray diffraction shows that the fabricated RBSC is composed of α-SiC,β-SiC, and free Si. The polytype of SiC is related to the reaction-heat during sintering.

结果表明：选用α-SiC+C粉的混合物作为生坯，SiC相的体积分数随生坯中wC的增加而增加，但过大的wC将使硅化后的试样出现残碳；选用碳毡作为生坯，反应烧结碳化硅的显微组织特点是C／Si反应生成的碳化硅颗粒均匀细小，并呈线状分布在游离硅中；浸渍过树脂的碳毡硅化处理后的显微组织特点是反应生成的碳化硅颗粒粗大且呈不均匀分布。X射线衍射结果也表明，反应烧结碳化硅陶瓷由游离Si、α-SiC、β-SiC组成，试样中不同晶型碳化硅的出现与C／Si反应的放热过程有关。

Where m, n is a positive integer, x, y is a positive real number and H, L represents Si, SiNx film, respectively.

前面用逗号，同时描述几组，每组都是两个。m， n是整数，x，y是正实数，H，L代表硅和氮化硅薄膜。

Based on the relationship and the phenomenon model, an improved model of MR damper has been presented in this paper.

摘 要：本文在实验数据的基础上建立了磁流变阻尼器输出力与不同常电流控制量的关系，对现有的 p模型进行了改进。

I don't think our founding fathers were very fuckable.

我认为我们的开国元老没什么吸引力