So this article introduces a kind of reasonable computing model, and applies it to calculating the sight distance that provided by crest vertical curves, moreover integrates it and method of PVSD to specify from quantity the principle of combining plane and vertical curves which belong to the freeway of plain district.
故本文引进一种较为合理的计算模型,来计算凸竖曲线上所能提供的视距,并结合PVSD法来具体量化平原区高速公路平曲线和凸竖曲线的组合原则,以期得到视觉效果最佳的立体线形。
The evaluation indexes of psychological and physiological burden degrees are established based on experiment and statistics method by research sight distance on single curve.
以单曲线部行车视距为研究对象 ,用实验和数理统计的方法建立驾驶员心理生理上负担程度的评价指标 ,评价现有公路的行车安全性和舒适性 ,并提出改进方案。
In the aspects of viewshed,and the view distance as well as psychological experience of the viewer,the paper analyzed comparatively the changes in the landscape visual features of the comprehensive natural lands.
从空间视域、视距与观景者视觉接收后所产生的心理体验等几个方面,比较分析了长江在三峡成库前的常年洪水位、成库后的145与175 m水位下沿江景观视觉特征的变化。
By means of deciding view angle α, the view distance d is controlled, the vanishing points are adjusted and the view points is got automatically.
阐述了一种透视投影的方法，通过预定视角α，自动控制视距ｄ和调整灭点，获取视点，并重建三维信息，从而易于选择视域，增加了直观性，减少了透视图形生成过程中的盲目性。
Visual range prediction for thermal imaging system by different static performance models;
基于不同静态性能模型的热成像系统视距估算
Based on the static performance of thermal imaging systems , a mathematical model for the visual range prediction adaptal for extended source target is studied.
从热成象系统静态性能出发，研究了热成象系统对扩展源目标的视距估算模型。
Based upon the signal to noise ratio of the image and static performance of thermal imaging systems, the effect of scene radiant characteristics to the visual range prediction of thermal imaging systems is studied in the prisent paper.
从图象信噪比及热成象系统静态性能出发，研究了景物辐射特性对热成象系统视距的影响。
The distance of each circle is 1.5- 5 kilometers.
每圈距离1．5～5公里。
Beijing Yansha How Far Have distance mature?
北京燕莎商圈距离成熟还有多远？
auto iris zoom lens
自动光圈变焦距镜头
maximum circle side shift
回转圈最大侧移距离
overall f - number
总光圈大小, 总孔径焦距比
guide number =GN
门灯指数，以距离计算出光圈
have a lead of three metres, two lengths, half a lap, etc
领先三米、 两个自首至尾的距离、 半圈等
A length, as of rope, required to make one complete turn around something.
（滚筒上绳索的）一圈一段可供围绕某物完整的一圈的距离，例如绳子
The vertical distance from crest to spill plane is the closure of the trap.
从圈闭顶部到溢出面的垂直距离称为圈闭的幅度。
This camera is easy to operate with the function of automatically adjusting the diaphragm and distance.
本照相机能自动调整光圈、距离，使用方便。
I've already set the lighting and distance. You can just press this button.
我已经调好光圈焦距，只要这个按钮就行了。
The camera adjusts its focus, lens aperture, and shutter speed by itself.
照相机会自己调整焦距、光圈和光闸速度。
Comparative Research into Ways of Counting Rounds in Walking Race and Long Distance Running;
场地竞走和长距离跑几种记圈方法的比较研究
Research on the Disparity of per Capital Annual Net Income of Rural Households on Wuhan Metropolitan Area
武汉城市圈农民人均年纯收入差距研究
Fuze Safety Distance Testing Method Based on Electromagnetic Induction of Coil Target
基于电磁感应的线圈靶引信保险距离试验方法
A method of removing ambiguous velocity in distance circle in process of wind field retrieving
风场反演中距离圈上速度退模糊方法研究
Thoughts on How to Narrow Gaps between Qualities of Public Service Supplied by Wuhan +8 Satellite Cities and Their Rural Territory
缩小武汉城市圈城乡公共服务差距的几点思考
The distance that a propeller would travel in an ideal medium during one complete revolution, measured parallel to the shaft of the propeller.
推进器转一圈的距离飞机螺旋桨旋转一次的前移距离，以其与螺旋桨相平行的距离衡量