强功率

By means of a linear array CCD lightintensity distribution measuring system, via the variation of the frequency and the power of ultrasonic wave, the direction control and the intensity modulation for the laser beam can be carried out. The relation curve between acoustooptic deflexion and modulation measurement is given.

在实验中，应用线阵CCD光强分布测量仪等，通过改变超声波的频率和功率，分别实现了对激光束方向的控制和强度的调制；定量给出了声光偏转量的关系曲线和声光调制测量的关系曲线。

At present, the wireless devices in general to bring the whole antenna, omni-directional radio antenna to the antenna axis, was "donut"-shaped radiation field; directional antenna is highly directional, in the small angle of radiation is totally outside the scope of signals ; the use of removable external antenna equipment can gain antenna, the antenna can not increase in the case of radiated power to increase communication distance.

目前的无线设备一般自带全向天线，全向天线电波以天线为轴，呈"面包圈"状向外辐射；定向天线具有极强的方向性，在小角度的辐射范围外是完全没有信号的；使用可拆卸天线的设备可以外接增益天线，可以在不增加天线辐射功率的情况下增加通讯距离。

The laser does not need any thermal len and thermal double refraction compensation element, having high output power, better beam quality, high doubling efficiency, better stability, widely applied in medical, industry.

该激光器不需要任何热透镜和热致双折射补偿元件，具有输出功率高、光束质量好、倍频效率高、稳定性好，医疗、工业应用性强等优点。

According to the characteristic of the reverse range shift induced by the upslope and downslope of triangular FMCW modulation, the upslope and downslope are imaged, respectively.

调频连续波雷达的低发射功率使其具有低截获、隐蔽性好、抗反辐射导弹能力强的特点。

Direct power control schemes have been widely used because of its simplicity, noise resistance, good dynamic performance, decoupled active and reactive power control.

PWM整流器的直接功率控制方法因具有简单实用、抗干扰能力强、良好的动态性能、可以实现有功无功的解耦控制的特性而被广泛应用。

In the theory part, based on the rate-equation theory of four-level system, the expressions of output power and slope efficiency under the conditions of near-threshold and deeply pumping have been given. The effects of space distribution variables(the position of focusing point, dimension of pumping light and laser light and ellipticity)on the output characteristics were also discussed.

在理论部分，首先从四能级系统的理论出发，得到了近阈值条件和强泵浦条件下的输出功率和斜效率的表达式，并详细讨论了泵光聚焦位置，泵浦光和振荡光的光斑大小、椭圆度等空间变量对输出特性的影响。

Owing to its small volume, light weight, high efficiency, succinct circuitry, high reliability and great capability of self-equalizing output loads in different circuitries, the Fly-back Converter becomes the optimally topological form of designing auxiliary power supply of high frequency switching power and driving power supply of power switching.

由于反激式变换器不但具有体积小、重量轻、效率高、线路简洁、可靠性高等优点，而且还具有较强的自动均衡各路输出负载的能力，目前反激式变换器的电路拓扑形式已成为人们设计高频开关电源的辅助电源以及设计各种功率开关驱动电源的首选。

To obtain high average current electron beams for high average power Free Electron Laser, a DC-SC photocathode injector is designed.

为获得用于高平均功率自由电子激光的高平均流强电子束，设计了一种新型的DC-SC光阴极注入器，并对其进行了优化设计和束流动力学研究。

RPP type time belt is much superior in friction with pulley, noise and jumping, also can put out much bigger power to any other classical timing belt.

RPP型同步带在带轮摩擦，噪音和弹性方面有极强的优势，输出功率大于其它传统的同步带

For angle-tracked coupling systems, an gaussian template matching tracking algorithm is proposed to reduce signal fading depth in the situation of strong turbulence.

对采用自动角度跟踪的耦合系统，提出一种采用高斯模板匹配的跟踪算法，可降低强湍流下耦合功率的衰落深度。

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。