效率测量

Introduced one method that total station instrument to replace leveling survey,the method predigests the outside work, improves work efficiency and it has more advantage in the complicated area.

介绍了一种用全站仪代替水准仪进行高程测量的方法，这种方法简化了外业工作，提高了工作效率，在地形比较复杂的地区有较大的优势。

At the same time, PN code telemetering is the main method in space telemetering with its various advantages.

同时，伪码测距具有无模糊距离大、测量误差小、发射机效率高等优点，是深空测距的主要方式。

Due to the high efficiency switching power supply, generally 80% or more, so the choice of the output current should be accurately measured or calculated maximum absorption current electrical equipment, so be selected with switching power supply with high cost performance.

因开关电源工作效率高，一般可达到80%以上，故在其输出电流的选择上，应准确测量或计算用电设备的最大吸收电流，以使被选用的开关电源具有高的性能价格比。

Of the equipment of automatic assembling bevel drive pinion was developed,which had the function of automatic measuring screwing moment and start-up friction moment.

控制系统对锁紧螺母拧紧力矩和轴承摩擦力矩采用闭环控制的实时测量，可精确控制轴承的预紧力，提高主锥总成的装配质量和生产效率。

It measures the space between tube-sheet of upper and bottom in assembly of tube bundle firstly,then unifying the dimension of tubes,finally proceeding with the welding of tubes,which reduces the difficulty of tube bundle assembly and improves work effic.

在管束组装中采用先测量上、下管板间距，再确定换热管长度，然后穿换热管并组焊的工序，降低了管束组装的难度，提高了工作效率。

The blackbody cavity as a reference source calibrates the system. The design considered the influence of the change of instrument internal stray radiation with the temperature on the measurement result and presented corresponding correction method by water bath.

也可用于对煤粉、燃气等火焰的光谱辐射进行测量，不仅可得到火焰的温度和发射率，还可为燃烧机理的研究、燃烧室的设计改进以及燃料燃烧效率的提高提供重要信息。

For the use of film inductor we made thin film transformer .It has goodfOreground though the coupling coefficient and efficiency are not very high.

作为薄膜电感的应用，我们制备了薄膜变压器，通过简单的测量可知虽然耦合系数和效率不是很高，但它还是具有较好的发展前景。

This combination of power and performance enables greater efficiency and density while enhancing range and sensitivity in defense, test and measurement, and communications applications.

这种低功耗与高性能的完美结合，不仅能使测量测试以及通信等应用具备更宽的覆盖范围与更强的灵敏度，同时还能实现更高的效率与密度。

Under different structural parameters of exit tube,including the inner diameter and the structure shape,the separation efficiency and pressure drop of the guide vane cyclone tube were measured by comparative experiments and the flow field in the guide vane cyclone tube was measured by an intelligent five-hole pilot tube.

通过对比实验测定了不同排气结构下导叶式旋风管的分离效率及压降，同时用智能型五孔球探针测试仪测定了不同排气结构的旋风管内流场分布，结合性能实验与流场测量的结果，研究了排气芯管内径及其结构型式对分离性能的影响，为旋风管结构优化和开发及其分离机理的研究提供了一定的实验基础。

This problem is also important and valuable in Nonlinear Optics. It will be very helpful to understand how the aberrations affect the course of three- wave mixing, such as the change of conversion efficiency, the distribution of intensity and phase.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 waves 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；通过建立国防科学技术人学研究生院学位论文三维数值模型，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，用哈特曼一夏克传感器分别对IO64nm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。

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。