扇形扫描

One slightly concave cylindrical lens combination is used to change one laser beam into small sector in small angle, and one reflector projects the laser beam to prism driven by a motor to rotate in high speed to produce one reciprocating and scanning small sector plane.

采用微凹柱面透镜组将激光光源发射的一束激光拉成具有微小夹角的小扇面，利用反射镜将此激光束透射到由电机驱动的高速旋转多面棱体上，使激光束产生一个小扇形往复激光扫描光平面。

Another AAF radar set merits mention. This is the AN/APS-15, a 10,000 MHz precision bombing set with sector scan and PPI display.

另一种值得提及雷达的是AN/APS-15，工作在1000MHz，可以进行扇形扫描和PPI显示的精确轰炸雷达。

A fast and real-time algorithm to obtain some vectors of the projection matrix is proposed in this dissertation to solve the conflict of time cost by matrix obtainment and memory occupied by matrix, and speed the iterative algorithm.

作者根据扇形扫描几何的对称性和重叠性，提出了一种快速实时获取投影矩阵分量的方法，较好地解决了获取投影矩阵所需速度和存放其所占内存空间的矛盾，提高了迭代重建算法的速度。

Result: 1. The method of arc-needle injection with 131I-iodinated oil step-by-step sector-shapely improved obviously the drug distribution, comparing with routine linearity injection. 2. SPECT image reconstruction detect 131I-iodinated oil three-dimensional distribution quantitatively. 131I-iodinated oil metabolism equation may obtained by continuous measurements, in order to calculate absorption dose of p particle at target. 3. ZT glue lengthens obviously 131I-iodinated oil retention in mouse local subcutis and rabbit liver which can rise local radiation effect, decrease injury at normal tissue.

结果：1、弧形针分段扇形注射~(131)I-碘化油，比常规使用的线性注射明显改善药物弥散均匀度。2、SPECT断层扫描定量检测~(131)I-碘化油的三维分布，连续测量建立~(131)I-碘化油的代谢方程，并计算~(131)I对靶区的β辐射贡献的吸收剂量。3、ZT胶明显延长~(131)I-碘化油在大鼠皮下、兔肝脏内的滞留。

I-iodinated oil metabolism equation may obtained by continuous measurements, in order to calculate absorption dose of β particle at target. 3. ZT glue lengthens obviously 〓I-iodinated oil retention in mouse local subcutis and rabbit liver which can rise local radiation effect, decrease injury at normal tissue.

结果：1、弧形针分段扇形注射〓I-碘化油，比常规使用的线性注射明显改善药物弥散均匀度。2、SPECT断层扫描定量检测〓I-碘化油的三维分布，连续测量建立〓I-碘化油的代谢方程，并计算〓I对靶区的β辐射贡献的吸收剂量。3、ZT胶明显延长〓I-碘化油在大鼠皮下、兔肝脏内的滞留。

There were many trichomes which contained Si on the surfaces of leave and stems on cucumber.

通过扫描电镜及硅的x能谱分析显示，水稻硅呈纺锤体及扇形硅质体。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新