In the step of exact location, the district method is adopted in view of the iris edge gradation jump characteristic to accurately to locate the iris the outside edge.
精定位阶段针对虹膜边缘灰度跳变特性采取了分区方法准确定位虹膜的外边缘。
Know modern match characteristic and technology of backboard recovery is it require, grasp correct training step and method to use, improve the training ability of backboard recovery.
认识现代比赛抢篮板球的特点及技术运用要求，掌握正确的训练步骤与方法，提高抢篮板球的训练能力。
In this paper, the method of dividing circle rotating magnetic field into polygonal step magnetic field and the step orientation characteristic of space rotating vectors are researched.
本文研究了由圆形旋转磁场离散为多边形步进磁场的离散方法和空间旋转矢量的步进定位特性。
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