数值技术

Instable flowing of plastics in extrusion die head often occurs as the sprue in the die head for plastic profiled bar inner rib is designed excessively dependable on experiences.

针对塑料异型材挤出模头内筋流道设计中过多依赖经验，造成模头作业不稳定的状况，提出了稳定性设计问题，并以实例介绍了运用计算机数值模拟技术辅助设计内筋流道结构参数的过程，提供了一个可行的内筋流道稳定性设计方法。

In view of dispersion,the application of guided wave NDT of pipe based on magnetostrictive effect was analyzed by the combination of numerical simulation and experimental research.

利用数值模拟和实验研究两种手段，从频散的角度分析了基于磁致伸缩效应的导波无损检测技术在圆管检测中的应用。

With FDDA method, the precipitation echo reflectivity field gained by observation and three dimension wind field as well as other parameters obtained by retrieval are put into the usual mesoscale or smallscale numerical model, so that the inner structure of mesoscale or smallscale weather system is better researched and precipitation is estimated more exactly.

2利用四维同化方法，将单多普勒天气雷达观测得到的降水回波的反射率场以及用反演技术得到的三维风场及其它变量，加入到通用的中小尺度数值模式中，以便更好地研究中小尺度天气系统的内部结构，预测其演变，并提供更精确的降水估计。

It covers all areas of introductory numerical methods and emphasizes techniques of programming in FORTRAN 77, and developing subprograms using FORTRAN functions and subroutines.

它包括介绍各个领域的数值方法，并强调在FORTRAN 77的编程技术，使用和发展子程序Fortran的功能和子程序。

The original technology is based on the far-field optical but all of them are restricted by Rayleigh diffraction limit.In order to break optical diffraction limit restrictions, people improve recording density in three ways:(1) shorten wavelength of light,(2)increase numerical aperture of the lens N.A.

不过上述储存方式所采用的记录技术皆是在远场光学的领域内，在远场光学的绕射极限下，要持续提升记录密度的方法有三种；(1)缩小光源波长(2)提高透镜的数值孔径

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。