长度基准是保证量值准确和实现互换性的基础。通俗来说就是用测量长短的衡量标准。我国现行的长度基准是单位米(m),
通过对图像瞄准系统中的畸变分析,提出以激光长度测量值作为长度基准的成像系统在线自标定方法。
In this paper the distortion of image collimating system is analyzed, and then an on-line self-calibration method with double-frequency laser length measuring result as length datum is presented.
本文研究了编织、染色和整理过程中影响棉针织物基准状态尺寸的各种因素,提出线圈长度对基准尺寸有决定性作用,染整工艺及染整条件对基准尺寸影响很大,应严格控制。
This report analyses the factors which influence the dimensions of reference state in knitting, dyeing and finishing process. Some measures for the control of reference dimensions have been discussed.
海图的基准比例尺是图上一个单位长度与其对应的球面上长度的之比,用分数表示。
The natural scale of a chart is the ratio of a length measured on the chart to a corresponding length measured on the surface of the Earth and is expressed as a fraction.
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