1) visible distance
通视距离
1.
This paper aims at safe visible distance of mountainous highways,the variety of drivers heart rate and systolic blood pressure is measured during driving by use auto-recording blood pressure instrument.
以山区公路平曲线通视距离的安全性为研究对象,利用全自动血压仪,对行车中驾驶员心率和血压的变动进行实验测试。
2) visibility distance
前视距离
1.
Placement of roadside traffic signs based on visibility distance;
基于前视距离的路侧交通标志设置方法
3) direct-view distance
直视距离
4) Apparent range of target
视在距离
5) interval of sur-vey
审视距离
6) legibility distance
视认距离
1.
The change rule of visual field in the dynamic environment is analyzed,and legibility distances are meas- ured under different velocities by dynamic experiments The results of experiments show that the effects of velocity on the legibility distance are not significant below a velocity of 120km/h,and the results are also analyzed with the theory of psychology and vision.
分析了动态条件下视野的变化规律,通过实车动态实验测定不同速度下标志汉字的视认距离。
补充资料：明视距离
最适合正常眼细致观察物体又不易产生疲劳感觉的距离。一般人的明视距离为20～30厘米。在设计光学仪器时，目镜成像的位置一般规定为25厘米。放大镜和显微镜目镜的角放大率也是以像距为25厘米、物距接近焦距f来计算的。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条