The structure of the deformation bands was observed and photographed by a microscope with a camera accessory . a user material mechanical behavior ( umat ) subroutine was developed based on the crystal plasticity model , and with it , the anisotropic elasto - viscoplastic behavior in single crystals was described . slip systems " evolution was simulated by using finite element method with the subroutine 本文使用数值模拟的方法对[ 001 ] 、 [ 011 ] 、 [ 111 ]以及偏轴加载的多种取向试样进行了拉伸试验模拟和循环模拟，研究了不同取向的试样在加载过程中滑移系的演化情况，并对试样的宏观力学行为和细观机理进行了评述。
We presents a detailed studied of the linewidth of parametric light in clbo - opo caused by the linewidth of pumping beam , off axis phase matching , divergence angle of pumping , time above threshold , high gain coefficient of nlo crystal , fluctuate of cavitylength , spontaneous radiation , according to the momentum and energy conversion laws , and the sellmeier equations of the clbo , we calculated curves of the type - i and type - ii compared with the bbo ' s 根据能量动量守恒关系和clbo的色散方程，详细分析了由于泵浦光的线宽、泵浦光偏轴泵浦、泵浦光的发散角、泵浦光功率超过参量光振荡阈值一定倍数、高增益系数、有效腔长波动以及自发辐射引起的参量光线宽，并得到了与bbo晶体在类、类相位匹配下比较的理论曲线。
Secondly , the beam orbit offset effects caused by the initial beam offset and the linac components " offsets have been quantitatively studied first . as an example with the injector linac for beijing electron positron collider upgrading project ( bepcii ) , the beam orbit offset caused by the above error effects have been simulated and analyzed 其次定量研究束流的初始径向误差和加速器部件的安装误差等对束流轨道偏轴的影响，并以北京正负电子对撞机二期工程( bepc )的直线加速器为例，给出了上述各种误差导致轨道偏轴的模拟计算结果及其分析。
The emulational software can gave objective off - axis quantity in field of view , and objective spacial position after dealing with theorical flight track and actual operation parameter of theodolite , and compose a emulational image , which is displayed on telescope by lcd to feed back observational effect for operator and on computer screen to monitor by trainer 仿真软件通过对理论飞行轨迹与经纬仪实际运动参数的运算处理，得出目标在视场中的偏轴量及目标当前所在的空间位置，并合成一幅仿真图像，通过液晶显示板显示于观瞄望远镜中，向操作手反馈观瞄效果。同时显示于计算机屏幕中，供教练员监控。
