1) surface roughness
地表糙度
1.
Research about effect of soil physical properties on the variation of surface roughness under the condition of rainfall;
降雨条件下土壤物理性质对地表糙度变化的影响
2.
As one of the major indexes to reflect surface micro-relief and physical characteristic,surface roughness has important effect on the hydrological and hydraulic characteristic.
地表糙度作为反映地表微地貌形态和物理性状的指标,影响着地表的水文学和水力学的特性。
3.
After a review of the ways of measures and calculations on the surface roughness,the methods of D.
在回顾了地表糙度的测量和计算方法后,经实验证实,Brough D L,Linden D R和Van Doren D M等人提出的糙度测量和计算方法,均能满足黄土高原坡耕地人为耕作管理形成的微地形特征的研究需求。
2) soil surface roughness
地表糙度
1.
Effects of soil surface roughness on runoff and sediment discharges with laboratory experiments;
地表糙度对径流和产沙影响的室内试验研究
2.
Splash erosion effects of tillage practices on soil surface roughness under different rainfall conditions
降雨条件下耕作方式对地表糙度的溅蚀效应
3.
Results showed that soil surface roughness can increase depression st.
地表糙度指地表微小的高低起伏变化,是人为土地管理与土壤侵蚀共同作用的结果,可以影响降雨过程中水分转化与土壤侵蚀过程。
3) roughness
[英]['rʌfnis] [美]['rʌfnɪs]
地表糙度
1.
On the basis of the analysis of the studies on roughness on sloping farmland,the advances in the research of roughness on sloping farmland were reviewed from the aspects of the definition, effecting factors, measuring methods and erosive effect.
在大量分析国内外坡耕地地表糙度研究的基础上 ,从地表糙度的概念、影响地表糙度的因子、测算方法及其侵蚀效应方面出发 ,客观地评价了该领域研究的进展 ,提出了该领域研究存在的问题和发展趋势。
2.
Based on the in -lab tests and the field measurements,a practical and reliable method for measuring gound surface roughness is given and effect of roughness upon the laws of runoff state, runoff velocity, runoff quantities and erosion quantities on the slope surface were studied through observations and measuements of surface runoff under different roughnesses in labs.
通过室内试验及野外量测，提出了野外实用可靠的地表糙度量测方法，通过室内对不同糙度下地表径流及侵蚀过程的观测，研究了糙度对坡面径流的水流形态、流速、径流量及侵蚀量的影响规律，从而得出，糙度对侵蚀过程的影响较大，尤以对径流量及侵蚀量影响为甚，是土壤侵蚀预报中一个不容忽视的因子，将其引入有利于提高预报精度。
4) surface roughness length
地表粗糙度
1.
Comparative research on four typical surface roughness length calculation methods;
几种典型地表粗糙度计算方法的比较研究
2.
A method is proposed for determining the surface roughness length.
提出一种确定地表粗糙度z0的方法。
5) aerodynamic roughness
地表粗糙度
1.
Through field investigation on wind speed,aerodynamic roughness,rate of sand transportation,and structure of wind-sand flow on different underlying surfaces,we found that vegetation cover can effectively prevent soil erosion by wind.
通过对毛乌素沙地不同下垫面上风速、地表粗糙度、临界起沙风速、风沙流结构的观测,发现植被覆盖可以有效防止地表风蚀。
2.
Through field investigation on wind speed,aerodynamic roughness,rate of sand transporting and the structure of wind-sand flow on different underlying surfaces,we found that vegetation cover can prevent soil wind erosion effectively.
通过对毛乌素沙地不同下垫面上风速、地表粗糙度、临界起沙风速、风沙流结构的观测,发现植被覆盖可以有效防止地表风蚀:植被盖度为40%的固定沙地近地表0。
6) surface random roughness
地表随机糙度
1.
Based on the investigation of 13 plots of the Loess area in Shanxi Province,The changes of the surface random roughness with stand density and growth season were studied by the needle roughness instrument.
为查明黄土区林下地表随机糙度的特征及地表随机糙度随植物生长季的变化规律,以晋西黄土区蔡家川流域13个径流小区为研究对象,利用针状糙度计对其地表随机糙度进行测量,分析不同林分密度的地表随机糙度。
补充资料：表面糙度
分子式：
CAS号：
性质：加工表面上由峰、谷和间距构成的微观几何形状误差。其相邻波峰和波谷的间距小于1mm，且大体呈周期性起伏。表面粗糙度的评定参数有近30种。其测量方法有比较法、光切法、光波干涉法、针描法、激光全息干涉法、激光光斑法、光点扫描法等。表面粗糙度会对零部件配合的可靠性、相对运动中的摩擦和磨损、工作寿命、振动和噪声等产生很大影响。因此，在选择加工表面的加工工艺条件、刀具的质量、加工系统的稳定等方面应作充分考虑，以保证加工后的表面达到粗糙度要求。
CAS号：
性质：加工表面上由峰、谷和间距构成的微观几何形状误差。其相邻波峰和波谷的间距小于1mm，且大体呈周期性起伏。表面粗糙度的评定参数有近30种。其测量方法有比较法、光切法、光波干涉法、针描法、激光全息干涉法、激光光斑法、光点扫描法等。表面粗糙度会对零部件配合的可靠性、相对运动中的摩擦和磨损、工作寿命、振动和噪声等产生很大影响。因此，在选择加工表面的加工工艺条件、刀具的质量、加工系统的稳定等方面应作充分考虑，以保证加工后的表面达到粗糙度要求。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条