Proceeding from the conditions of the ideal charged model,the paper anal- ysed the distributive characteristics of electric field intensity of some model objects,the choice of the electric potential reference points and the continuity of the electric fields.
从带电理想模型的条件出发,分析了模型客体的场强分布特点、电位参考点的选择及电场的连续性。
Methods: Six hands grip positions were simulated for 8 patients and the set-up reference points marked on the sternum skin were compared while the hands grasped different positions of the hands.
方法:模拟8例胸部肿瘤病人放射治疗摆位中双手握杆位置变化的几种场景,测量胸骨皮肤上摆位参考点受牵拉而移动情况。
The errors due to positioning an regional are studied, and some conclutions are deduced that errors of uknown node are smallest when positioning reference nodes and unknown node meet certain conditions.
通过对定位过程中产生的误差区域分析,推导出当空间定位参考点和未知节点满足一定条件时,定位误差最小,由此提出空间定位参考点的布局模型定理。