The poles of the Earth precess at a right angle to the force that is applied. 地球的两极按照施加的力的大小以正确的角度不断地步进。
Furthermore, the strength of PVC was detemined by analyzing the motion frequency of precessional center. 通过分析旋进涡核中心的运动频率，得到了旋进涡核出现的强度。
As two clocks precess in phase, problems may occur at only one phase relationship. 两个时钟产生相位，问题也许就出现在相位关系上。
The model of seeding disc stressed was established and analyzed its stress precess of air cock’s inlet increased. 通过负压流场的试验，实物试验考证，证实通过属性体建立的真空流场三维有限元模型分析结果的正确性和研究的有限元分析方法的可行性；
This criterion is reasonable because it is not expressed in terms of the precessional velocity, but the angular velocity of the permanent rotation. 该判据用永久转动角速度的大小而不是进动角速度的大小作为判别准则,较为合理。
HAP had relations with corma age inhospital time basic diseases and medical care precess. 感染与昏迷程度、年龄、住院时间、基础疾病及医疗操作有一定关系。
