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1·Aerodynamics roughness length is one of important indexes for estimating topsoil erosion.

耕作土壤表面空气动力学粗糙度是评价土壤可蚀性的重要指标。

2·Aerodynamic roughness length is a important feature to easement soil resistance to wind erosion.

耕作土壤表面空气动力学粗糙度是评价土壤可蚀性的重要指标。

3·Vegetation characteristics, such as height, density, coverage, lateral coverage of vegetation are closely related to the aerodynamic roughness length.

植被高度、密度、覆盖度、侧影盖度等特征，通过影响下垫面空气动力学粗糙度来达到抑制风蚀的效果。

4·We find the aerodynamical roughness length and the zero plane displacement is increasing with the development of the urbanization in recent decade years.

结果表明，空气动力学粗糙度和零平面位移总体是逐年递增的。

5·Using wind velocity profile law determinate the aerodynamic roughness length of wheats different growth periods: the average roughness of shooting period, is 6.

利用风速廓线法测定小麦不同生长期的空气动力学粗糙度：青苗期的平均粗糙度最大，为6。

6·Roughness length during the flood phase is larger than that during the ebb phase, whilst shear velocity during the flood phase is smaller than that during the ebb phase.

涨潮阶段床面粗糙长度大于落潮阶段， 涨潮阶段摩阻流速小于落潮阶段。

7·The amount of the departure may not necessarily be large, but it results in the larger errors when the profiles are used to calculate the bed roughness length and shear stress.

虽然偏离值可能不大，但利用对数剖面去计算河底粗糙长度和剪切应力时会引起较大的误差。

8·On the basis of those work, we continue to simulate and discuss the changes of heat island intensity caused by artificial heat source, aerodynamic roughness length and wind speed.

在此基础上，模拟并探讨了人为热源、风速、地面粗糙度等因素对城市热岛强度的影响。

9·Influences of axis inclination, length, clamping Angle of anchorage, roughness and bonding degree of interface on the displacement of anchorage and repose stability of rock mass were explored.

就锚碇体轴线倾角、长度、夹持角、接触界面粗糙度及结合程度对锚碇位移和岩体安息稳定性的影响作了深入探讨。

10·Machinery and equipment testing includes the measurements of length, Angle, roughness, geometry and mutual alignment.

机械设备检测是对机械零件中包括长度、角度、粗糙度、几何形状和相互位置等尺寸的测量。