通过速度折减量与坡长之间的关系曲线，提出基于运行速度差和满足公路服务水平要求的各级公路最大纵坡坡度与坡长限制值。
By analyzing the relationship between speed loss, speed discount in different gradient and grade length, the paper also brings forward the maximum longitudinal gradient and grade length limit.
控制石炭二叠系两类三角洲发育的主要是河流类型、地形坡度、水体深浅、不同水体密度差及河流沉积作用和湖泊的分散作用等。
The two kinds of deltas are controlled by river types, ground slope, water depth, water density differentia, river sedimentation and lake dispersion.
当排汇比和坡度相同时，最大逆温差值随山坡的总高度差的增大而减小。
Furthermore, with the increase of the total altitude gaps of hills, the maximum inverse temperature gaps decreased when the drop-join and grades of slopping fields were not changed.
当排汇比和坡度相同时，最大逆温差值随山坡的总高度差的增大而减小。
Furthermore, with the increase of the total altitude gaps of hills, the maximum inverse temperature gaps decreased when the drop-join and grades of slopping fields were not changed.
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