双晶的

The results reveal that the double peaks exist in the age-hardening curves of both the unreinforced and the reinforced MB15 allo...

结果表明，MB15及其复合材料的时效硬化曲线上均存在双峰现象；SiCw的加入既提高了MB15的硬度，又加快了其时效速度；混粉方式对晶须分布及SiCw/MB15复合材料的室温力学性能影响很大。

By means of the complex variable function method and introducing the conformal transformation,the anti-plane shear problem about two semi-infinite collinear cracks in one-dimensional hexagonal quasicrystals was investigated and the exact solution to mode Ⅲ SIFs was found out.

利用复变方法，通过引入适当的保角映射，研究了一维六方准晶狭长体中双半无限共线裂纹的反平面剪切问题，给出了Ⅲ型裂纹问题的应力强度因子的精确解。

Fe(superscript 3+) occupied both tetrahedral sites in spinel block and trigonal bipyramid sites in mirror plane for LaFeMnAl(subscript 12-x-y)O19 (x=0.5, 1) hexaaluminate.

LaFeMnAl(下标 12-x-y)O19(x=0.5， 1)中Fe以Fe(上标 3+)位于六铝酸盐尖晶石结构中的四面体位和镜面层结构中的三角双锥位，其中后者为N2O分解的主要活性中心。

The conoscopic interference pattern of wafer with optical axis parallel to the surface of a crystal is sensitive to the crystal birefractive index.

光轴平行表面的晶片的会聚偏光干涉对晶体的双折射率非常敏感。

On the basis of developing a new technology to synthesize sodium diacetate successfully without any pollution,the culture of bigger crystal in perfect shape and single crystal of small dimension suitable for X-ray diffraction was attained.

在研究成功双乙酸钠零污染合成工艺的基础上，培养成功了晶型完美的大尺寸晶体和适宜进行X光结构分析的小尺寸单晶，并进一步应用四圆衍射仪测得其晶体结构。

The chemical structure and mesomorphic properties of this series of compounds were characterized by FT-IR, MS, 1H NMR, polarizing optical microscopy and DSC techniques.

利用FT-IR、MS、1H NMR、POM、DSC 表证了所得化合物的结构和介晶性，并选择几种双液晶基元液晶测定了它们的机械黏度和在主体液晶中的螺旋扭曲力

The femtosecond irradiation spectra was used to measure the radiation kinetics process. Fitted by the two exponent model, two time peaks were obtained, corresponding to the interband radiation and the surface defect radiation respectively. This results also strongly suggests that there are two relaxation pathways in the nanocomposite.

利用飞秒发射光谱观测凝胶玻璃中ZnSe纳米粒子发光动力学过程，采用双指数模型进行拟合，得到了两个时间组分：11.2ps和550ps，分别对应纳米品的带间发光和表面缺陷态发光，进一步证实了半导体纳米晶材料受激辐射的两种发光途径的存在。

It is widely accepted that the essential mechanism inthe manganese oxides is the double exchange and electric-phonon interaction,whichare intimately related to the lattice distortions of MnO6 octahedra.

目前国际公认此材料中最根本的物理机制是双交换和电-声子相互作用，它们和此材料中载流子的自旋和MnO6八面体的晶格畸变密切相关。

To this end, the use of MCS-51 series AT89C51 single-chip device designed as the central traffic light control circuit, with a total of cathode seventh time the digital display module, the traffic light display module, transfer module, crystal oscillator circuit, reset circuit and control circuit 8051 in accordance with the actual traffic flow through the port P3 chip set red, green and double-time to kindle a digital countdown display,The turn of the three colors of lights and emergency lighting in case of interruption of processing.

为此，采用MCS-51系列单片机AT89C51为中心器件来设计交通灯控制电路，配以七段共阴极数码管显示时间的显示模块，交通灯显示模块，调时模块，晶振电路，复位电路以及控制电路，实现根据实际车流量通过8051芯片的P3口设置红、绿灯燃亮时间以及双位数码管显示倒计时，三种颜色灯交替点亮以及紧急情况下的中断处理功能。

To this end, the use of MCS-51series AT89C51 single-chip device designed as the central trafficlight control circuit, with a total of cathode seventh time thedigital display module, the traffic light display module, transfermodule, crystal oscillator circuit, reset circuit and controlcircuit 8051 in accordance with the actual traffic flow through theport P3 chip set red, green and double-time to kindle a digitalcountdown display,The turn of the three colors of lights andemergency lighting in case of interruption of processing.

为此，采用MCS-51系列单片机AT89C51为中心器件来设计交通灯控制电路，配以七段共阴极数码管显示时间的显示模块，交通灯显示模块，调时模块，晶振电路，复位电路以及控制电路，实现根据实际车流量通过8051芯片的P3口设置红、绿灯燃亮时间以及双位数码管显示倒计时，三种颜色灯交替点亮以及紧急情况下的中断处理功能。

The medicinal plant resources of Gentianaceae in Sichuan Province.

四川省龙胆科药用植物资源。

"Some fortuneteller," scoffed the man, I'm the father of THREE children.

" "一些算命"，嘲笑他，"我的父亲有三个孩子。