效率测量

Small signal solution of aberrated second harmonic generation is deduced from three-dimension three wave coupling functions. The numerical work gives out lot of results of different aberrations. The effects of the fundamental wave's aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed. It shows that when walk-off and diffraction effects could be ignored approximately estimation of the phase distribution of second-harmonic wave could be done. The far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. The phase distribution of both fundamental and harmonic wave is measured using Hartmann-Shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively. Results are given.

首次从三维三波相互作用方程组推导得到了位相畸变光束倍频的小信号解；通过建立三维数值模型，编写相应仿真程序，首次得到了位相畸变光束倍频过程的大量计算结果，深入细致地研究了位相畸变光束经非线性光学频率变换后谐波的转换效率、光强分布、位相分布以及影响它们的各种因素；得出谐波的远场发散角和光斑二阶矩的变化规律会因为基波像差的不同而不同，但谐波的远场发散角明显地比相应基波的小的结论；得到了在走离效应和衍射效应等影响许多因素可以忽略的情况下，位相畸变传递到二次谐波的估算式；举例分析了KDP三倍频方案中，基波位相畸变对二次谐波和三次谐波的影响；实验工作中，用哈特曼-夏克传感器分别对1064nm倍频过程和790飞秒超短脉冲倍频过程中的基波和谐波的位相分布进行了测量，给出了相应结果。

The system were common to the MIMU based on high-speed CPU ,CPLD and FPGA ,and can be expanded in researching.With the CADS ,efficiency can be promoted.

该系统具有良好的通用性和可扩展性，可以大大提高基于高性能CPU 和 CPLD 、FPGA 等技术的微惯性测量组合的研制效率。

The system is common to the MIMU based on high-speed CPU , CPLD and FPGA and can be expanded in researching. With this CADS, the efficiency can be promoted and the period of research and development can be reduced markedly.

该系统具有良好的通用性和可扩展性，基于高性能CPU 和 CPLD 、FPGA 等技术的微惯性测量组合的测试过程可以大大提高工作效率，缩短研发周期。

Laser leveling aided decision-making support system was equipped with multi functions, including run route planning, digging and filling, work time estimation, advanced analysis. The functions were realized by adopting MapObject Control module in Microsoft Visual C ++6.0 developing environment.

作为智能三维测量系统输出数据的处理系统一激光平地辅助决策支持系统，以Microsoft Visual C++6.0为开发环境，调用GIS的MapObjects控件进行组件式开发，实现了行走路线的选取、挖填土方量的计算、工作效率分析、三维成图等功能。

The test has its widest application in measuring waste loadings of treatment plants and in evaluating the efficiency of treatment processes.

这一测试在测量处理厂的废物排放以及评价处理过程的效率上有它最广泛的应用。

Now machinists detect the saddle of bearing the weight with template by hand, this way is intensely and more inefficient.

目前对承载鞍的关键尺寸的测量，一般采用阶梯形的模板来手工进行检测，这种方法对工人的劳动强度较大，效率也较低。

Based on studies about current development of Methods of separating meiofauna, a new method is advanced in this paper. A suit of device was designed to Separate meiofauna from benthic sediments sample automatically, accurately and efficiently, which based on the technology of Laser-induced Fluorescence Detection, and used other technologies, such as noctilucence, electronics, biophysics, computer, mechanism, and so on. The scheme of macrocosm, the design of light route, the hardware and software design of the photoelectricity detection system and machine control system, the method of signal processing are introduced, especially the hardware and software design and the method of signal processing.

论文分析了目前国内外所使用的小型底栖生物分离方法现状，并以此为基础，自主开发了一套基于激光诱导荧光技术，并且集荧光化学技术、电子物理技术、光电测量技术、计算机技术及机械技术为一体的小型底栖生物标本自动分离系统，实现了从沉积物样品中自动分离小型底栖生物标本，从而大幅度提高室内小型底栖生物分样的工作效率和精度的目的，并以此完成了大洋协会&十五&攻关项目：&小型底栖生物标本自动分离系统研制&。

The performance of the device is superior to that of reported bottom emitting device The microcavity exits in TOLED because the emitting layer of device is located between two metal mirrors with certain

通过实验验证了计算的合理性，并且利用增透膜制备了高效率的顶发射器件，器件在低电压4V下的亮度为677cd/m2，效率达到了15cd/A，而且发光峰几乎不随测量的角度而改变，非常有利于在显示中的应用。

On the basis of the method of determining the boundary of the bright and dark springes, which is defined in the paper, the sizing methods of 2D holographic image and 3D holographic pattern are offered, so that the range of the field depth and the efficiency of image processing can be improved.

并且在本文提出的明暗斑条纹边界确定方法的基础上，给出了确定颗粒尺寸的二维全息影象测定法和三维全息图判别法，从而提高了测量的景深范围和图象处理效率。

Employing a general Monte Carlo code MCNP, the following Monte Carlo calculations which are important in the design of PAN shufflers were done:(1) optimization of moderators;(2) detection efficiency variation with the position of a neutron source;(3) multiplication effects and self-shielding effects;(4) isotopic effects;(5) shielding properties of the storage chamber and the assay chamber;(6) the relation between 〓Cf source strength and background neutron count rates.

文章详细讨论了无源方式下中子总计数分析和符合计数分析以及有源方式下缓发中子分析的基本原理，在此基础上，运用通用蒙特卡罗程序MCNP计算了桶装废物分类装置研制过程中所关心的一系列问题：慢化体的优化设计、探测效率随中子源位置的变化情况、增殖和自屏蔽效应、同位素效应、贮存室和测量室对〓Cf源的屏蔽能力、〓Cf源强度与本底计数率的关系，等。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。