参数化

In general relativity, the acceleration of the universe is parametrized by a scale factor a which is related to redshift

广义相对论中，宇宙的加速度通过尺度因子来参数化，尺度因子通过如下的公式跟红移联系起来

The method has been applied in design of CAD for passageways of pump stations and the result is satisfying.

在参数化变动设计中，实体驱动方式一般有两种：图元驱动及尺寸驱动。

In addition to commercial professional design tools such as SolidWorks and CorelDRAW , the students will be introduced to a new design environment where the objects in the design can be parameterized algorithmically.

除了商业专用设计工具如SolidWorks 和 CorelDRAW ，将介绍给学生们一种新的设计环境来把设计的物体用演算法进行参数化。

In order to develop and modify Gregory scheme for cumulus convective parameterization,we make the improvement as follows:(1) The large-scale moisture convergence is taken into account and the organized inflow,which occurs in the area of large-scale moisture convergence and is directly proportional to it, is added to turbulent airflow.(2) The influence on saturation vapor pressure exerted by supercooled water is taken into account and the initial mass flux is adjusted. Based on diagnosis of the air heating and moistening, the downdraft airflow is adjusted.(3) Based on the character of our country heavy rainfall,which usually occurs in the mixed cloud consisted of stratocumulus and cumulus, the process of excessive convection is restrained by organized outflow in the top of cloud and improving downdraft current and by reducing the evaporation of rainfall and release of latent heat.

为了改进和发展Gregory积云参数化方案，(1)考虑了大尺度水汽辐合对积云对流的影响，即在混合卷入中加入有组织的卷入，让有组织的卷入存在于有大尺度水汽辐合的层次上，并且与大尺度水汽辐合直接成比例；(2)考虑了过冷水存在对饱和比湿的影响，调整了初始的质量通量，并且根据对大气加热加湿的诊断，调整了大气向下拖曳的强度；(3)根据我国降水多由层状云和嵌入其中的对流云混合产生的这一特点，对于过强对流过程进行抑制，在云顶加入有组织的卷出，同时加大向下拖曳的强度，减少蒸发以降低潜热的释放，抑制过强对流的发生。

Traditionally ellipsoids and hyperboloids are modeled as implicit surfaces or through the use of rational surface schemes. The existing methods for generating spheres or quadrics have shortcoming such as the rational parameterizations for these surfaces are non-uniform, the resulting scheme cannot represent these surfaces in their natural acr-length parameterization and the implementation of the scheme is complex.

长久以来，Subdivision方法对一些看似简单却又在计算机图形学中有着重要作用的曲线曲面的造型非常困难，即使是对简单的圆和球的生成也很困难，已有的一些生成球或二次曲面的Subdivision方法一般都有太复杂、不能自然弧长参数化或者计算量太大等缺点。

This approach provides a more natural and convenient method of representing a par...

该方法提供了一种更加自然和方便的表示模具参数化模型的途径。

Finally, the validation and reliability of the proposed technique was verified by parametrically modeling the dynamic model of the car.

最后通过轿车参数化建模实例，验证了该方法的有效性和可靠性。

A deployable space telescope structure with an aperture of 4 meters was introduced and its finite element model was parametrically developed.

介绍了某口径为4m的空间可展开望远镜的结构形式，建立了其有限元参数化模型。

Finally, the first beam of the Pick-Up car of an automobile company and an oil-cup are meshed parametrically succeed with this program.

最后利用该程序对某汽车公司匹卡车的第一横梁和某汽车油杯进行了网格划分，成功地实现了网格划分的参数化。

It is aimed to enhance the performance and reduce the cost of manufaceure of alauminium alloy wheel.By the use of the CAD system in Unigraphice,the three-dimensional model of die of wheel can be set up parametrically.

本文在三维造型软件Unigraphics的CAD平台下进行轮毂的模锻工艺与模具设计中相关问题的CAD参数化三维实体造型。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新