能见度

Based on the liquid water content and optical visibility, the method for determining the parameters of gamma drop size distribution model of fog and clouds are developed, the drop size distributions for advection and radiation fog are obtained with empirical relations of the liquid water content and the visibility, the characteristics of drop size distribution for different kinds of fog are analyzed and discussed.

提出了利用云雾含水量和能见度确定gamma云雾滴尺寸分布的方法，利用雾的含水量和能见度的经验关系，得到了辐射雾和平流雾的雾滴尺寸分布模型，并对不同类型雾的尺寸分布特征进行了分析和讨论。

This paper compares the visibility observed automatically by MITRAS atmospheric transmissometer made by VAISALA Company in Finland with the visibility record of artificial observation, analyzes the difference between these two kinds of observation data, and finds out the relationship between them through statistical analysis.

摘 要：将芬兰VAISALA公司的MITRAS大气透射仪自动观测的能见度与人工观测的能见度记录进行对比，分析两种观测数据的差异，通过统计分析，找出他们之间的关系。

By means of the results of ordinal regression analysis, this study discovers phenomena as follows: in a single automobile which runs off the road, the main factors are such as the use of cell phone and seat belt, drinking alcohol, violative behavior, trip purpose, timing, visibility, and road quality; in a single automobile which hits islands, the key factors are consist of driver's license and qualification, the use of cell phone and seat belt, trip purpose, visible distance, road visibility, road quality, and limited speed; in a single automobile which hits the roadside objects, the primary factors include the use of cell phone and seat belt, driver's license and qualification, drinking alcohol, violative behavior, age, timing, trip purpose, and region.

由顺序回归分析结果可知影响事故严重度的关键因素。在冲出路外的单一小客车事故中，关键因素为行动电话使用情形、安全带使用情形、饮酒情形、违规行为、旅次目的、时段、道路能见度和铺面品质；在撞路中物体的单一小客车事故中，关键因素为驾驶执照、驾驶资格、行动电话使用情形、安全带使用情形、旅次目的、道路视距、道路能见度、铺面品质和速限；在撞路旁物体的单一小客车事故中，关键因素为行动电话使用情形、安全带使用情形、驾驶执照、驾驶资格、饮酒情形、违规行为、年龄、时段、旅次目的和地区。

As a result, the regression relations are obtained. In addition, the paper provides the quantitative relation between visual range and extinction coefficient.

论文给出了能见度与消光系数之间的定量关系式，进一步讨论了雾各微观量对能见度变化的影响。

In allusion to drivers′ response time state under the conditions of rain,fog,strong light and dark pavement,the relationship between visibility,glare strength,pavement brightness and response time of drivers are studied. The results show that response time of drivers increases with visibility,glare and brightness decreasing.

针对雨、雾等灾害性天气以及强光、路面亮度不足等恶劣环境下驾驶员的反应时间状况，在国内外研究现状的调研分析的基础上，对能见度、眩光强度、路面亮度等道路环境与驾驶员反应时间的关系进行研究，结果表明驾驶员的反应时间随能见度增加、眩光增强、亮度减少而增长。

Early in the morning, Nanjing, Wuxi, Linyi airport, such as fog, visibility is 100-300 meters, is expected that the visibility at the airport was around 10 o'clock to pick up gradually over 1000 meters.

清晨，南京、无锡、临沂等机场有大雾，能见度100-300米，预计上述机场的能见度10时前后逐渐好转至1000米以上。

Because of using optics sensor and working under external environment condition, the precision of the visibility meter was affected by the temperature stability of the optics sensor and the difference between the temperature inside and outside the meter.

能见度仪光学器件的温度稳定性以及光学镜头与外部的温差都将直接影响能见度仪的精度。

Visibility was reported as 10 miles but the temperature and dew point were together at 6 degrees C, and local residents experienced patches of quarter-mile visibilities and total obscurations in the neighborhood.

报告的能见度为10英里，温度和露点双双都是6摄氏度，地面的能见度只有四分之一英里，左邻右舍之间都是朦朦胧胧的。

Where air traffic controllers take tower visibility observations, tower visibility charts shall be maintained in the control tower.

当塔台管制员作塔台能见度观测时，塔台能见度图必须挂在管制塔台上。

Based on Gamma distribution model of fog drip size derived from the empirical relation of visibility and water content for advection and radiation fogs, the relations between radar reflectivity factor and fog visibility or water content are proposed.

利用平流雾与辐射雾的能见度与含水量的经验公式导出的 Gamma 雾滴谱分布，得到了平流雾和辐射雾的雷达反射因子 Z与雾的能见度、含水量的关系式。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。