Times of this order are deduced directly by measuring the length of the particle track in a bubble chamber.
这样量级的时间是通过测量粒子在气泡室中径迹长度直接得到的。
length diameter ratio
长径比（长度与直径之比）
The length of the zigzag is determined by the stitch size, and the width is set by a dial. the higher the number, the wider the stitches.
这种线迹的长度取决于针迹的大
The length of such a segment.
直径长这样一段的长度
Estimate the Mean Trace Length and the Midpoint Density of Rock Joint Based on the Circular Window Method
圆形窗口法估算岩体节理迹长及迹线密度
truncated exponential pathlength distribution
截指数路径长度分布
cosmic-ray pathlength distribution
宇宙线路径长度分布
escape pathlength of cosmic rays
宇宙线逃逸路径长度
the ratio of the circumference to the diameter of a circle.
圆周长度与圆的直径长度的比。
Study on Path Planning and High Precision Track Control for Unconstrained Mobile;
无约束运动体路径规划与高精度轨迹控制研究
A Novel Track Initiation Algorithm Using Radial Velocity Measurement
一种利用径向速度量测的航迹起始新算法
Teacher: What's the relationship between the radius and the diameter of the same circle?
师：直径的长度和半径有什么关系？
Analysis of the Ecological Footprint from the View of GDP and Ecological Footprint;
从GDP和生态足迹关联角度研究生态足迹结构——以福建长汀县为例
The resulting length of path is greatly increased, with consequent increase in resistance.
结果路径长度大大增长，电阻增大。
It measures three feet in diameter (height/length).
它的直径(高度／长度)是3 英尺。
It measures three feet in diameter [height, length].
它的直径[高度，长度]是3英尺。
A Study on the Growth of Higher Education and Moderate Size of Institutions of Higher Learning;
高等教育的成长轨迹与高校规模适度发展研究
a length (straight or curved) without breadth or thickness; the trace of a moving point.
没有宽度或厚度的长度（直或弯曲）；移动的点的迹线。