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区硅
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  in silicon
     In this paper,an accurate temperature model of the bandgap in silicon at low temperature is presented,the error between the calculated values and the experimental data is smaller than 0.3 meV.On this basis,a compact expression of the intrinsic carrier concentration in silicon at low temperature is obtained,and the error in calculation is smaller than 3%.
     本文提出了低温区硅禁带宽度的精确的温度关系,计算值与实测值的误差小于0.3meV,在此基础上推得了低温区硅本征载流子浓度的简明表达式,计算误差小于3%.
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  “区硅”译为未确定词的双语例句
     Measurement of positron annihilation parameters in hydrogen float zoned silicon single crystals
     氢气氛浮区硅单晶中正电子湮灭参数的测量
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     The association of these minerals suggests that the crystallization order of the mineral may be from early to late FeSi→FeSi_2→ native silicon, accompanied by gradually increasing deoxidization.
     本区硅铁合金具有FeSi→FeSi_2→自然硅的晶出顺序,推测其形成环境中的还原程度依次增高。
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     The results showed that the interface was comprised of Fe3Si,α-Fe andε-Cu. With the increase of feeding speed, the compound of Fe and Si was replaced byα-Fe solid solution and the grain changed from cellular dendritic grain to dendritic grain and equiaxed grain.
     结果表明:界面区由Fe3Si化合物、α-Fe及ε-Cu组成,随着送丝速度的增大,熔覆区硅铁化合物相被α-Fe固溶体取代,熔覆区晶粒形态由胞状树枝晶向树枝晶、等轴晶转变;
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     The presence of Si-H bonds in hydrogen FZ silicon single crystals was confirmed by measurements of infrared absorption spectrum. Three characteristic absorption peaks were found at 4.51, 4.68 and 5.13 μm.
     通过红外吸收光谱的测定,证实了氢气氛浮区硅单晶中存在硅氢键,三个特征吸收峰在4.51,4.68和5.13μm波长处。
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     Self-calibration of Silicon Photodiode in the Soft X Ray Spectral Range
     在同步辐射软X射线能区硅光电二极管的自标定
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  相似匹配句对
     The Photodetector of Silicon with the Net Sensitive Range
     网格敏感光探测器
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     The High-Low Emitter (HLE) Si Solar Cell
     高低发射(HLE)太阳电池
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     A LOW TEMPERATURE SILICON THERMOMETER
     低温温度计
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     necking down region;
     颈缩 ;
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     Silicon Photonics
     光子学
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  in silicon
When the energy in silicon lattice reaches its maximum value, the bonds of silicon atoms are broken and the material is removed.
      
The analysis of the shape of X-ray diffraction patterns and the dynamics of the changes in silicon atomic structure were described within the framework of three-fraction model.
      
Quantum-Chemical Study of the Electron-Donating Ability of Endocyclic Nitrogen and Oxygen Atoms in Silicon-Substituted Silatrane
      
As an example, the distribution of the temperature and stresses in silicon dioxide particles is considered.
      
The dominance of dissolution on the concave side of the plates indicates the negative sign of the surface stress in the glass and in silicon at the interface with the solutions.
      
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The presence of Si-H bonds in hydrogen FZ silicon single crystals was confirmed by measurements of infrared absorption spectrum. Three characteristic absorption peaks were found at 4.51, 4.68 and 5.13 μm. By analysing theoretical calculations[3,4], it is believed that hydrogen atoms in silicon lattice are situated on several interstitial sites. Investigation showed that the Si-H bonds formed in crystal growth influences implicitly on the crystal perfection, and it was discovered that there exists a close relationship...

The presence of Si-H bonds in hydrogen FZ silicon single crystals was confirmed by measurements of infrared absorption spectrum. Three characteristic absorption peaks were found at 4.51, 4.68 and 5.13 μm. By analysing theoretical calculations[3,4], it is believed that hydrogen atoms in silicon lattice are situated on several interstitial sites. Investigation showed that the Si-H bonds formed in crystal growth influences implicitly on the crystal perfection, and it was discovered that there exists a close relationship between the production, of defects by hydrogen and the breakdown of hydrogen-associated bonds at high temperature.

通过红外吸收光谱的测定,证实了氢气氛浮区硅单晶中存在硅氢键,三个特征吸收峰在4.51,4.68和5.13μm波长处。根据有关的理论计算报道分析,认为氢原子在硅晶格中处于几种间隙位置。研究表明这种在晶体生长中形成的硅氢键对晶体完整性隐含着影响,并发现硅单晶中氢致缺陷的形成与硅氢键在高温下的断裂有密切关系。

In this paper, the technique of applying insert-foils in capacitor discharge spot welding for a successful joining together of coated molybdenum alloy sheel is described. Methods have been developed, with which the main technical problems, such as sticking of coating to the electrode tip, cracking in the welded spot and deterioration of joint strength, were solved with satisfaction. Success in preventing sticking was achieved by inserting tin or lead foil (0.3~0.45mm thick)between electrode tips and workpiece....

In this paper, the technique of applying insert-foils in capacitor discharge spot welding for a successful joining together of coated molybdenum alloy sheel is described. Methods have been developed, with which the main technical problems, such as sticking of coating to the electrode tip, cracking in the welded spot and deterioration of joint strength, were solved with satisfaction. Success in preventing sticking was achieved by inserting tin or lead foil (0.3~0.45mm thick)between electrode tips and workpiece. Increase of strength at high temperature was obtained by inserting niobium or tantalum foil (0.03~0.05mm thick) between the contact surfaces of workpieces. The effect of the shape of electrode tip on crack formation and sticking were investigated. It was shown that the electrode with domed tip was more effective in reducing cracking and sticking than that with flat tip. Metallographic examination showed that actually welding was not due to the formation of nugget, but due to the formation of solid phase bonding between niobium foil and molybdenum alloy sheet instead. Under the action of pulse current heating and electrode pressure, the coating in the joint centre melted and was squeezed out.

本文叙述了添加两种垫层的电容储能点焊工艺;成功地解决了渗硅钼合金薄板的连接问题。对点焊过程中出现的电极粘结、裂纹和焊点强度等关键问题进行了研究:在电极与工件表面之间垫入锡或铅箔(厚度为0.30—0.45mm),消除了电极的严重粘结;采用铌或钽箔(厚度为0.03—0.05mm),作焊点接合面的中间垫层,提高了焊点的高温强度;研究了电极端部形状对焊点产生裂纹及粘结的影响。试验证明,采用球端电极能更有效地消除焊点裂纹和粘结。通过对结合面的金相观察,这种焊点结合不是形成熔核而是在脉冲电流加热和电极压力的作用下,结合面中心区的硅层熔化并向外挤出,在钼、铌之间产生固相结合。

Diatoms in 22 surface sediment samples from the northwestern sea area of Antarctic Peninsula are studied. 82 species of diatoms are examined.

本文对南极半岛西北海域22个表层沉积物中的硅藻进行了初步研究,鉴定出硅藻82种.根据硅藻的数量分布和生态特征,将本区硅藻分为三个组合;1.Yhalassiosiraantarctica—Charcatia actionchilus—Eucampia balautium组合.2.Th.antarctica——Nitzschiakerguelensis—Coscinodiscus lentignosus组合.3.Coscinodiscus lentiginosus——Eucampiabalaustium—Nitzschia kerguelesis—Schimperiella antarctica组合.文章还通过沉积物中和水体中硅藻的对比,水动力状况,以及海水对硅藻壳体的溶解作用等特征.讨论了区内硅藻壳体的沉积作用.

 
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