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.
对以张力金属丝作为大长度直线运动导引基准的可行性进行了分析，给出了系统的工作原理。
Feasibility of a kind of guiding datum line of linear motion in large distance using strained wire is analyzed. The working principle of the system is presented.
数量卡尺检定专用量块是一种长度计量基准，主要用于数显卡尺示值误差的检定，精度分为2、3级。
The special gauge blocks for testing digital calipers are length measuring standards, mainly used for testing the indication error of digital calipers, with grade 2 and grade 3 accuracies.
标识：普通包布V带的标识，本公司均按V带的外周长度及基准长度标识，各型号换算关系见上表。
MARKING: The marking of classical wrapped V-belts represent both the inside length and pitch length of factory V-belts. The length conversion table is availabie for conversion between various models.
标识：普通包布V带的标识，本公司均按V带的外周长度及基准长度标识，各型号换算关系见上表。
MARKING: The marking of classical wrapped V-belts represent both the inside length and pitch length of factory V-belts. The length conversion table is availabie for conversion between various models.
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