大功率的

Under this direction, we developed a kind of inverter power supply, and the parameters are as follows:(1)the input of three-phase alternating current;(2)the output of sinusoidal wave;(3)the frequency of output: 5-25 kHz, which can be adjusted;(4)the voltage of output: 5-20 kV, which can be adjusted.

根据这个特点，我们研制了一种高频、高压的大功率逆变电源，参数如下：(1)三相交流输入；(2)输出正弦波；(3)输出频率：5～25kHz，可调；(4)输出电压5～20kV，可调。

ABSTRACT Soft-switching technique for high power source is one of active front field in power electronics.

大功率软开关技术是电力电子学领域中最活跃的研究前沿之一。

We have the LED Spot lamp, Matrix lamp, hurdle lamp, colorful brick, project lamp, wall lamp, underground lamp ,pool lamp and kinds of high power project lamps etc. Most parts of products have passed the CE, SGS certificate.

现产品有LED射灯、点光源、护栏管、发光地砖、投光灯、洗墙灯、埋地灯及各系列的配套大功率产品等，部分产品通过CE、SGS认证。

Furthermore, the theoretical model presented here is applied in describing the far-field distribution of diode laser bar. Theoretical curve is given in this paper.

在单个激光二极管的基础上，本文还将模型推广到线形列阵大功率半导体激光器，给出了理论曲线。

The ridge－loaded helical traveling wave tube is a new kind of high power millimeter wave device. The "hot" dispersion equation of this circuit loaded with an electronic beam is presented in this paper, and the Downhill method is used to solve the transcendental equation.

脊加载螺旋槽行波管是一类新型毫米波大功率器件，给出了此结构中引入电子注后的"热"色散方程，并利用"牛顿"下山法求解了此复系数超越方程。

Based on this fact, a new transconductance model of RF high power LDMOS is built.

在此基础上建立了射频大功率LDMOS的跨导模型。

Integrated design of control system of a large power three-axis electric-driven flight turntable is discussed.

介绍了大功率三轴电动仿真转台控制系统的总体设计与实现。

Made of ultra bright LED or high power LED, it is a new-styleopto-electric lighting product.

LED投光灯采用超高亮LED或大功率LED制作而成，是新型的光电照明产品，其

In this paper, based on high-power switching devices insulated gate bipolar transistor, a novel sinusoidal signal generator applied to UHV-FTRTPS is developed. The generator possesses plenty of merits: uncompounded structure, less components and easy maintenance.

提出采用大功率开关器件绝缘栅双极晶体管(insulated gate bipolar transistor，IGBT)来代替模拟器件产生特高压试验所需的正弦信号，结构简单、元器件数目少、易维护。

Vehicular School of Beijing Institute of Technology,Be ijing 100081

介绍了在大功率车用柴油机上进行的电控系统研究。

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。