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1)  errors accumulate of pitch
螺距累积误差
2)  accumulative pitch error measurement
螺距累积误差测量
3)  accumulative pitch error
齿距累积误差
1.
The influence of spindle rotational speed and radial speed on the accumulative pitch error was analyzed and its result was experimentally verified.
按照滚压成形前后工件(花键)体积不变的原则给出毛坯直径的计算公式;根据分齿阶段花键毛坯与滚压轮作等线速纯滚动的运动特征,推导保证正确分齿要求的滚压轮齿顶圆直径公式;根据滚压时的受力分析,给出旋转条件及滚压轮的齿数条件;分析主轴转速及径向速度对分齿时齿距累积误差的影响。
4)  cumulative lead tolerance
螺距累积公差
5)  accumulated error
累积误差
1.
Accumulated error control technique applied in small mass production of piece;
累积误差控制技术在单件小批量生产中的应用
2.
This paper introduces the principle of the 3D Optix laser scanner briefly,discusses the method of improving the data accuracy in single piece measurement and reducing the accumulated error of spliced joint in multi-pieces measurement with an applied example.
简要介绍3D Optix扫描仪的测量原理,并结合一测量实例探讨提高单片点云数据测量精度及减小多片点云数据拼接累积误差的方法。
3.
Firstly,the nonlinear problem and the cause of accumulated error for inertial strapdown attitude solution were analyzed.
采用低精度的微惯性陀螺和加速度计作为微惯性捷联姿态确定系统元件,首先分析了捷联惯性姿态解算的非线性问题和误差累积的原因;根据姿态三角函数关系引入横滚、俯仰角的3个替换变量作为状态变量,并根据状态变量之间的约束方程和运动体前向速度测量,建立了捷联惯性姿态的一种扩展卡尔曼滤波模型;采用MTi微惯性捷联测量组合进行实验,将该扩展卡尔曼滤波方法解算载体姿态结果与捷联姿态解算结果相比较,验证了该方法抑制惯性姿态解算累积误差的能力。
6)  accumulative error
累积误差
1.
With the purpose to reduce influence of accumulative error from the recurrence formula of residual stress measured with magnetic stress meter on the calculation result,based on the consideration that the stress at a same measuring point has no relation to the measuring order,the author proposed an improved calculation method for the work piece with free boundaries on both ends.
为了减小CCY-84型磁测应力仪残余应力递推公式中累积误差对计算结果的影响,针对两端自由边界的工件,基于同一测点应力与其测量顺序无关的思路提出了改进的计算方法,并在实际测量770mm×1200mm×2820mm球墨复合铸铁轧辊工作层残余应力中得到了应用。
补充资料:DNA螺距
分子式:
CAS号:

性质:指DNA的双螺旋链中的任意一条链绕轴一周(360η°)所上升(或下降)的距离。该螺距通常是3.4nm,其中包含十个核苷酸,因此每两个相邻碱基平面的垂直距离为0.34nm,相对于该螺旋轴仅移动36°。

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