1·With regard to a low coverage ratio of urban rail transit systems in cities of China, this paper suggests using network marks to deter-mine the spatial layout of rail transit systems.
针对我国城市轨道交通网络覆盖率低的特点，提出采用网络标识确定轨道交通的空间布局。
2·It measures wind erosion under the conditions of different wind speed of floodplain area with different vegetation coverage ratio of the Yongding River by using mobile filed wind channel equipment.
利用野外移动式风洞试验装置，对永定河不同植被覆盖率河滩农地在不同风速下的风蚀量进行了测定，结果表明：播草盖沙可以提高起沙风速，有效减少河滩地的土壤流失。
3·The film thickness corresponding to the saturation coverage ratio decreases obviously with the increase of the substrate temperature.
对于一定的薄膜名义厚度，硅油基底温度越高，中心区域的凝聚体覆盖率越小。
4·Using this method, the information redundancy of each sub topic and among sub topics is reduced. The information coverage ratio of the summarization is better improved.
从减少子主题之间及子主题内部的信息的冗余性两个角度选择文摘句，使文摘的信息覆盖率得到很大提高。
5·Droplet distribution uniformity, drift and coverage ratio are main indices of appraising spray quality.
雾滴分布均匀性、飘移性和对目标的覆盖率是评价喷雾质量的主要指标。