The cranking term breaks the time reversal symmetry, and the projection of the single particle angular momentum on the intrinsic symmetric axis is no longer a good quantum number.
推转项的引入破坏了时间反演对称性，单粒子角动量在内禀对称轴上的投影量子数已不再是好量子数。
For recognition, the front or trailing edge of projection of binary image on horizontal axis basically shows linear shape, so least square theory is applied in tilt correction.
识别过程中，数码管二值化后的图像在水平轴上的投影，其上升沿或下降沿基本呈现直线的形状，尝试把最小二乘法应用于倾斜校正。
Sphenoid projection, a projection has more projective centers which are the crossing points intersected by minor axis of the ellipsoid and the parallel planes.
楔形投影是以过该点纬线所在平面与椭球短轴交点为投影中心作中心投影。
The image of sphericity which does not located the principal optic axis is an ellipse based on pinhole model, and the image center offsets from the projection of the sphere center.
针孔成像模型下非主光轴上的球体成像为椭圆，椭圆中心偏离球心投影点。
Result the parameters of posterior arch, lateral mass, vertebral artery groove, axis length of screw pass via posterior arch and lateral mass, projection and direction of screw were measured.
结果测量出寰椎后弓、侧块、椎动脉沟、后弓侧块螺钉通道的轴线长度，及后弓进钉点和进钉方向等参数。
The system obtains 2-D data of the thread axis profile section by CCD with optical projection and machine driving.
该系统采用光学的方法，借助机械传动通过CCD摄像，获取螺纹轴剖面外轮廓的数字图像。
The system obtains 2-D data of the thread axis profile section by CCD with optical projection and machine driving.
该系统采用光学的方法，借助机械传动通过CCD摄像，获取螺纹轴剖面外轮廓的数字图像。
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