velocity of development

The velocity of the embryonic development is accelerated as thetemperature, at 20-33℃, is increased.

在适宜温度范围内,随着温度的升高,胚胎发育速度加快,在水温30℃时, 胚胎发育的速度比在20℃时快一倍.

The successful development of the high-velocity slit burner posts a technical guarantee for the applying of impact heating technology in continuous casting and direct rolling of steel in thin slab manufacturing process.

它的研制成功为冲击加热技术在薄板坯连铸连轧和直接轧制（HDR）中的应用提供了技术保证。薄板坯连铸连轧工艺的生产流程有别于传统工艺流程。

With the improvement of the velocity of railway system and the development of technical criterion, the requirement of railway foundation work developed gradually. The main design idea of the ballast engineering had changed from the intensity control to the deformation control.

随求也不断提高，路基工程已由以往的强度控制设计思想发展为变形控制为主的设着铁路运营速度的不断提高和技术标准的不断发展，对铁路基础工程的要计思想。

The development of surface engineering and erosion resistant coatings was reviewed. The applications of thermal spray coatings against erosion were introduced. The microstructure and erosion resistance of Fe3AI/ WC coating produced by high velocity arc wire spraying was introduced briefly.

对表面工程及抗冲蚀磨损防护涂层的发展作了述评，重点介绍了热喷涂涂层在冲蚀磨损防护方面的应用，并对高速电弧喷涂Fe3Al/WC复合涂层的组织和高温冲蚀磨损性能作了阐述。

In this paper, the two dimensional Fokker-Planck Equation is exactly solved by means of the numerical method. The velocity distribution at the saddle point, the second moments of the coordinate and velocity, the time development of the nuclear fission rate are studied.

本文应用数值方法严格求解二维福克-普朗克（Fokker-Planck）方程，研究在鞍点上的速度分布、坐标和速度的二次矩以及核裂变速率随时间的演变。

This paper discusses the research development of such laws as the lateral slope of the water surface, secondary circulation flow, average velocity along vertical line, distribution of the main streamline and sediment transport characteristics in the river bend.

本文着重对弯道水流水面横比降、横向环流、纵向垂线平均流速分布规律及弯道输沙特性研究进展进行了阐述分析，以便为生产科研方面服务。