screw offset guards 螺旋桨护架
First one offset of the mechanism was split into two serial mechanism, and two screw kinematic equations were given.
首先将该机构的一个分支拆分成两个串联机构，分别建立了动平台的螺旋运动方程；
Based on the theory of MBS, presenting the comprehensive errors model consisting of offset probe errors, geometric errors, screw thermal error and spindle error.
以多体系统理论(MBS)为基础，建立了包含测头误差、机床几何误差、丝杠和主轴热误差的综合误差补偿模型。
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