1) sea surface aerodynamic roughness
海面空气动力粗糙度
1.
Intercomparison of three sea surface aerodynamic roughness schemes in COARE algorithm;
COARE算法中3种海面空气动力粗糙度方案的比较
2) aerodynamic roughness
空气动力学粗糙度
1.
The nature of interactions between surface winds and gravel beds that can be characterized by aerodynamic roughness length has important implications for sediment mobilization, transport and sedimentation.
通过砾石床面的空气动力学粗糙度(Z0)的风洞实验研究,结果表明,砾石床面的空气动力学粗糙度(Z0)与砾石粒径、砾石覆盖度和自由风速有关,Bagnold的1/30定律和其它有关空气动力学粗糙度与粗糙元高度的固定比例对砾石床面都不适用。
2.
It was found that the aerodynamic roughness length increased with the vegetation height by exponential function at the constant wind velocity.
试验结果表明:在一定风速下,地表的空气动力学粗糙度随植被高度的增加呈指数增加,且随着植被高度的增加,作用于植被上的剪切力增加,而作用于地表的剪切力减少;一定高度的植被可有效地截留风沙流,农田地表的风蚀量随风速的增加呈指数增加。
3.
Wind tunnel tests indicate that the more vegetation coverage is the more aerodynamic roughness length.
空气动力学粗糙度是影响植被覆盖土壤抗风蚀能力的重要因素。
3) aerodynamic roughness length
空气动力学粗糙度
1.
By imitating the activity of dust storm under natural condition in wind tunnel,a series of experiments were carried out to research the relationship between aerodynamic roughness length,wind velocity and vegetation coverage characteristics.
通过风洞实验,对风速廓线测定结果应用最小二乘法进行相关性分析,由拟合方程系数得到了植被覆盖的下垫面空气动力学粗糙度,并重点讨论了粗糙度与输入风速、植被特征参数的关系。
2.
In this article, we first analyzed the cause and mechanism of blown sand harm, and pointed out that the reason of sand harm lies in the vulnerable environment and irrational human activities; then the efficiency of the existing sand control facilities were evaluated by measuring their aerodynamic roughness length; at last an optimized sand control system was proposed.
作者通过实验计算空气动力学粗糙度,比较了三种典型的机械防沙措施的效果,指出了其中存在的不足。
3.
In this review, attention is directed towards five important aspects of aerodynamic roughness length: ①origin of aerodynamic roughness length, ②derivation of aerodynamic roughness length both by applying Buckinghams πmethod and mathematical method, ③physical significance of aerodynamic roughness length, ④classification of aerodynamic roughness le.
空气动力学粗糙度是风沙边界层的一个重要参数。
4) aerodynamics roughness length
空气动力学粗糙度
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.
5, simulating aerodynamics roughness length and displacement height of vegetation coverage surface of Siziwang town in Inner Mongolia.
空气动力学粗糙度是表征地表空气动力学特性的重要参数。
5) aero-dynamic roughness length
空气动力粗糙长度
1.
In this paper, giving to the importance of the air-sea interaction in the WBL (water boundary layer), the progressing of the air-sea interaction is reviewed, that not only including the statistic of the wind stress and aero-dynamic roughness length, but also the modeling of the structure of WBL and the mechanism of coupled air-sea.
鉴于海洋边界层内风、浪相互作用在海洋、大气研究中的重要意义,本文较详细地回顾、总结了国内外有关海洋边界层风、浪相互作用的研究进展:由最初的关于风应力和空气动力粗糙长度的统计研究发展到后来的利用模式探讨海洋边界层的结构和风、浪耦合机制。
6) Sea surface roughness
海面粗糙度
1.
Under open sea conditions the sea surface roughness is described as a function of surface stress and wind speed over sea surface by the Charnock relation.
海面粗糙度对于海洋工程和海洋军事都非常重要,但对海面粗糙度的现场观测资料非常少,这大大制约了我们对海面粗糙度的认识。
2.
As a parameter to express the characteristics of surface undulation,the sea surface roughness has stimulated a common interest in the past.
全面地理解它以及准确地参数化海面粗糙度对海。
3.
Especially on the retrieval of sea surface wind using altimeter data,the change of sea surface roughness during rain will affect the accuracy of wind retrieval.
降雨是常见的大气现象,在海表面特征量的研究中,降雨的影响不可忽略,特别是对卫星高度计数据反演海面风速的研究中,海面粗糙度的变化会影响雷达返回数据从而影响风速估算的准确性。
补充资料：Pro/Engineer Drawing 表面粗糙度
1 概述
我们可以添加标准形式的表面粗糙度，下面列出了这些标准形式
Generic 切削加工 非加工
no_value
standard value value value
7.3.2 添加表面粗糙度
选择 DETAIL> Create > Surf Finish.
如果你还没有添加任何一种表面粗糙度，或者需要添加另一种类型的表面粗糙度，你需要“Retrieve”表面粗糙度；如果你需要添加已经存在的类型，你可以使用"pick Inst"选项；也可以使用"Name"选项
选择表面粗糙度的放置方式（有引线箭头、附着实体等）
选择需要的放置实体
输入表面粗糙度的值
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