介绍了一种测量机床竖直运动直线度和滚动误差的新方法。
In this paper, a new method for measuring the vertical motion straightness and rolling error of machine tools is presented.
本文通过对滚动轴承的实验研究，分析了预测中权的选择和预测误差。
In this paper, the selection of weight facfor and the error in forecast based on experiment of rolling bearing are discussed.
偏心渐开线齿轮传动设计的纯滚动模型、等转角模型和等分模型存在模型误差。
The pure rolling model, equal turning Angle model and bisection model for the design of eccentric involutes gears transmission have model error.
分析仿真结果表明，滚动向指向误差和稳定度以及星载SAR中心视角对分辨特性影响较大，该研究结果对于卫星总体参数确定和优化设计具有参考价值。
The simulation results prove that roll error and its stabilization and spaceborne SAR squint angle are the key factors to SAR resolution performance errors. The conclusion is valuable t…
滚动轴承一般按经验公式估算其刚度特性或简化为定常的弹性元件，但误差较大。
Rolling bearing stiffness is usually estimated empirically and it is simplified as a constant stiffness element. This method often causes large error.
使用改进的GM（1，1）模型，即滚动灰色GM（1，1）模型，其中模型初始点是动态且最佳的，并减少了系统误差。
This paper introduces the trundle gray GM(1,1) model, which is improved from GM(1,1) model and has the best initial point and cuts down system errors.
使用改进的GM（1，1）模型，即滚动灰色GM（1，1）模型，其中模型初始点是动态且最佳的，并减少了系统误差。
This paper introduces the trundle gray GM(1,1) model, which is improved from GM(1,1) model and has the best initial point and cuts down system errors.
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