| 1. | ? realize dynamic clip display of 3 _ d velocity model by texture mapping and model transformation 利用模型变换及纹理映射方法,实现三维水平速度模型的动态剥离显示。 |
| 2. | Moreover , the author found out the reason of leading to the loss of horizontal velocity and the way to decrease it 同时,找出了造成水平速度损失的原因、水平速度损失率对跳远成绩的影响以及减少水平速度损失的对策。 |
| 3. | The analysis examined the causes of the strengthening and the reasons behind the slow return of the hong kong dollar to the convertibility undertaking rate of 7 . 8 分析研究了港元转强的成因,以及港元汇率反回至兑换保证汇率7 . 8的水平速度缓慢的原因。 |
| 4. | Speed - based triple jump is the future trend of triple jump . to better its training , the first jump should be shortened and the third jump should be improved 摘要研究认为,速度型三级跳远技术成为现在和未来发展的必然趋势。其训练应围绕着以速度为核心,以减少水平速度的损失为前提,缩短第一跳,加大第三跳。 |
| 5. | Abstract : the concept , absolute utilization rate of approach speed in long jump refers to the ratio of the athlete ' s horizontal speed of cg at the moment of taking off to his / her absolute speed in running 文摘: “跳远助跑速度绝对利用率”是指:运动员踏板瞬间人体重心水平速度与运动员平跑中人体重心最高水平速度(绝对速度)的比值。 |
| 6. | Abstract : by comparing our long jumpers with foreign athletes , the author thinks that the only way to improve the performance of long jump is to increase the ho rizontal velocity and decrease the loss ratio of velocity 文摘:通过对中外跳远运动员的对比分析发现,中国运动员只有在加大水平速度的同时,进一步减少其速度的损失率才能更有效地提高跳远成绩。 |
| 7. | Under the assumption of linear ocean waves , and in the light of the theoretical framework about the probabilistic distribution of wave characteristics ( sun fu 1988 ) , several probabilistic distributions of wave characteristics that is necessary for the estimation of breaking probability and whitecap coverage are derived . afterwards , the models of breaking probability and whitecap coverage are set up with these distributions in addition to the kinematical criterion 在线性海浪假设下,基于孙孚( 1988 )关于三维海浪要素统计分布的理论框架,具体给出二维海浪波峰处质点水平速度和表观相速的联合分布等分布函数,在此基础上,根据运动学判据,分别建立起风浪破碎率和白浪覆盖率的理论模式。 |
| 8. | Taking the results as boundary constraint and the velocity field of horizontal movement after transforming reference frame as the load of fem node , the velocity field of horizontal movement in the region is simulated , the principal strain rate field and maximal shear strain rate field are calculated , the variety characteristics of the two rate fields and relation between the variety characteristics and strong earthquake preparation are analyzed 将反演结果作为边界约束并将变换参考框架后的水平速度场作为有限元节点载荷,模拟区域内部水平运动场并计算其主应变率场、最大剪应变率场,以分析这两个时段中这两种场的变化特征及其与地震孕育之间的关系。 |
| 9. | In this paper , based on summarizing previous numerical studies on wave transformations , several works are documented : based on the mass conservation equation and euler ' s equation , the extended form of boussinesq equations is derived by using the velocity at an arbitrary water depth as the independent variable , and several terms are added into governing equations to model the effects of bottom friction , wave breaking and subgrid turbulent mixing 本文在总结概述前人关于boussinesq方程波浪数学模型研究进展的基础上,主要做了以下几点工作:从质量守恒方程和euler方程出发,以某一水层处水平速度矢量作为独立变量,推导出包含底摩擦耗能、波浪破碎效应和子网格湍流效应的改进型boussinesq方程。 |