试验结果表明,曼宁粗糙系数随水深深度的增加而增加。
The results show that the Manning roughness coefficient increases with increasing water depth.
因此,适应度地貌的粗糙系数决定了启发式算法的求解性能。
Therefore, the ruggedness coefficient of the fitness landscape is essential for performance of heuristics.
值得一提的是,当水深维持不变时,曼宁粗糙系数也会持续增加直至纵向基桩间距与其宽度相同为止。
It is also found that, when the water depth is fixed, the Manning roughness coefficient increases as the longitudinal pier spacing increases up to approximately the pier width.
通过测定集流面的集流效率和粗糙系数,认为固化剂集流面的集流效率达到90%以上,表面粗糙系数在0.011~0.014之间。
The rainwater harvesting efficiencies of catchment area with different construction techniques were above 90% and the coefficients of roughness were 0.011~0.014.
为了避免传统的权值确定方法所带来的主观性影响,将粗糙集理论引入可拓权重系数的求解过程中,使权系数问题转化为属性重要度评价问题。
To avoid the excessive subjectivity influenced by the conventional determination methods of weight factor, the rough set was introduced to the solution of the weight factor in the extenics evaluation.
采用传统微扰法和基于圆柱曲面修正的微扰法,计算了实际粗糙面掠入射时的后向散射系数,并与有关测量值进行了比较。
Comparison of a set of measured data to numerical computations of the backscattering coefficients for actual natural rough surface by the classical and new perturbation methods were given.
重新定义了近似空间内的一些概念,给出了加权粗糙集模型的约简概念,指出了加权系数的两种方法。
Some Approximate Space concepts were re-defined. The Reduction of Weighing Rough Set Model was stated, two methods for calculating weight were was given, too.
由计算的不同风速下双站散射系数可知,风速对海洋粗糙面散射特性的影响较大。
From the calculation value, it was known that the wind speed had strong impact on the scattering characteristic of dielectric ocean rough surface.
实验结果表明当壁面粗糙度超过1%时摩擦系数随着壁面相对粗糙度的增加而增加。
The friction factor obtained from the experiments increases with the surface roughness increase when the relative roughness is greater 1%.
若流线型物体表面的摩擦阻力系数仅为相对粗糙度的函数,则形状阻力系数与雷诺数无关。
Since if the frictional resistance coefficient is a function of relative roughness, then the form resistance coefficient is independent of the Reynolds number.
在烧蚀滞后滚转力矩的计算方法中,本文主要介绍滞后引射率和粗糙度对壁面摩擦系数联合影响的一种快速计算方法。
In the calculations of roll torque of ablation lag, a rapid method for calculating combined influence of ablation injection and roughness on skin friction coefficient is mainly described.
通过木排原型阻力的现场测试与相应的模型试验分析对比,确定了木排粗糙度附加系数的数值。
The value of additional coefficient of raft roughness is established through the comparative analysis of raft prototype resistance measurement on the spot and relevant model experiment.
在宏观尺度上,以地形起伏度、地形粗糙度、地形高程变异系数为主。
Relief, roughness and variance coefficient in elevation are main index in macro scale.
研究结果表明:静子和转子壁面粗糙度对大间隙环流中偏心转子动特性系数有较大影响。
The effects of stator and rotor wall roughness on the dynamic coefficients of the eccentric rotor in large gap annular flow have been investigated with numerical method.
质量系数只能作为一个粗糙的标准来比较图片。
Since neither is based on the sample tables, the quality factor should only be taken as a very rough comparison measure.
粗糙关系数据库模型从本质上来说就是多值信息系统,它继承和扩展了经典的粗糙集理论,但与经典粗糙集理论又有着很大的不同。
Rough relational database model is Multi-valued information system essentially, inheriting and extending classical rough sets theory. But there is much difference between them.
摩擦系数主要受纳米管径的影响,还受表面粗糙度和弹性模量的共同影响。
Frictional coefficients were mainly related with nanotube diameters of specimens, next with surface roughness and elastic modulus of specimens.
研究发现:相同轴重下,滚动速度越大,粗糙峰接触压力与总压力的比值越小,导致轮轨之间的粘着系数下降;
When under the same axle load, if the wheel rolling speed gets higher, the adhesion coefficient declines as the ratio of the mean asperities contact pressure to the total pressure becomes smaller.
相同速度下,轴重较大,粗糙峰接触压力占总压力的比值也越大,此时粘着系数也较大。
When under the same speed, if the axle load gets weighter, the adhesion coefficient increases as the ratio of the mean asperities contact pressure to the total pressure becomes bigger.
对于不同粗糙程度的壁面,在同一流量条件下的糙率系数会随着相对粗糙度的增大而增大。
The roughness coefficient increases when the relative roughness of the surface becomes larger under the same condition of discharge.
为了发现粗糙关系数据库中潜在的和有趣的模式,提出并研究了粗糙函数依赖的近似度量和精确度量。
The accurate and approximate measures of rough functional dependency are proposed in this paper in order to find potential and interesting patterns for rough relational database.
本文对反射系数测定值进行了初步的定量分析,讨论了实际金属表面的反射机理,从而导出测定值与实际表面粗糙度的关系。
The present paper analyses the measuring reflection coefficient and discusses the reflection principle on real surface of metalwork. The relation between measuring magnitude and roughness is th...
该度量的提出及其性质的研究有利于粗糙关系数据库的知识发现及数据查询的研究,并且进一步扩大了粗糙关系数据库的研究领域。
The introduction of approximate theory of rough functional dependency will accelerate the development of knowledge discovery for rough relational database and extend its research field.
通过测量反射光密度分布曲线的半宽度,由高斯曲线系数的标准差计算表面粗糙度。
The reflected intensity curve can be approximated by a Gaussian function. The width of the intensity distribution curve was evaluated with...
通过测量反射光密度分布曲线的半宽度,由高斯曲线系数的标准差计算表面粗糙度。
The reflected intensity curve can be approximated by a Gaussian function. The width of the intensity distribution curve was evaluated with...
应用推荐