首先，用反螺旋理论分析了在初始位置和发生位移后该机构的运动特性。
Firstly, the kinematical characteristics of this mechanism in its initial position and in the position after a translation happened were analyzed by reciprocal screw theory.
首先用反螺旋分析了3 -RRRRR并联机构在初始位置下和在一般情况下的瞬时运动特性。
Firstly, utilizing the reverse screw, the characteristics of instantaneous motion of 3-RRRRR parallel mechanisms under its initial position and under the general condition were analyzed.
提出一种基于螺旋系线性相关性和约束反螺旋概念的空间并联机器人输入原动件选取合理性的判别方法。
Based on the concepts of reciprocal screws and their linear correlativity, a detecting method of input interference in a spatial parallel manipulator is presented.
目的：探讨弹性包绕式垫加螺旋扩弓器矫治替牙期后牙反的适用性及治疗前后的牙颌结构变化。
Objective:To evaluate the maxillary expansion effects of posterior crossbite patients treated with elastic wrapping bite guard and screw expansion mechanic in the mixed dentition.
本文依据反变形设计原理，指出提高圆柱形螺旋弹簧初拉力的途径及实施办法。
This paper presents the way and practical method for improving the initial tension of cylindrical spiral springs on the basis of anti-limit deformation principles.
在网络时代，“沉默螺旋”理论明显地表现出局限性，网络传播出现一种新的态势，即“反沉默螺旋”现象。
In the network era, "the spiral of silence" obviously displays its limitations. Network communication gives rise to a new situation, namely the phenomenon of "anti-silence spiral".
也可以采用Rheoseal密封，它在轴封内表上加工有反向螺旋槽，可使聚合物被反压回到进口。
Also, it can be used in Rheoseal seal shaft sealing in a table, can make the reverse spiral groove back by the import of polymer.
也可以采用Rheoseal密封，它在轴封内表上加工有反向螺旋槽，可使聚合物被反压回到进口。
Also, it can be used in Rheoseal seal shaft sealing in a table, can make the reverse spiral groove back by the import of polymer.
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