Special surface structure the friction and creates more comfortable and safe ground environment for the movement.
特殊的表面结构，增强了摩擦力，创造了更加舒适和安全的运动地面环境。
The ground collapse and cracks caused by underground mining severely threaten the safe in production and destroy the surface environment.
地下采矿引起的地表塌陷和裂缝，严重威胁矿山生产安全，破坏地表生态环境。
The leachate of landfill pollute the surface water and the ground water, and it is one of the primary factors for pollution of environment.
而其中渗滤液对地表水和地下水的污染已经非常突出，是引起环境污染的主要原因之一。
We propose a road-surface abstraction algorithm which is suitable for structured or semi-structured road environment and extracts effectively a road-surface for ground robot navigation.
为使机器人自主导航系统能够快速有效地提取前方路面，提出了一种可应用于结构化和半结构化环境的路面提取算法。
The natural wind changes frequently in forest environment because of topography, terrain, ground surface vegetation and so on.
自然风在森林环境中因受地形、地势和地表植物等因素的共同影响而变化丰富。
The water environment of Beijing is not pretty well, the surface water and ground water have been polluted to different degree.
北京市目前的水环境状况不容乐观，地表水和地下水都受到了不同程度的污染。
The water environment of Beijing is not pretty well, the surface water and ground water have been polluted to different degree.
北京市目前的水环境状况不容乐观，地表水和地下水都受到了不同程度的污染。
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