导波

This topic uses the switching mode is the entire bridge all controls the rectification filter, moreover the power source has also utilized the soft switch technology, causes its loss to reduce obviously, the DC-DC transformation use cuts the wave boosted circuit to realize, the structure is simple, the transfer efficiency is high; Selects the small breakover resistance, the high shutter speed P60N06 tube for the switching valve, to select the quick recovery diode rectification, reduces the reverse breakover time, reduces the loss.

本课题采用的开关方式是全桥全控整流滤波，而且电源还运用了软开关技术，使它的损耗明显降低，DC-DC变换使用斩波升压电路来实现，结构简单，转换效率高；选用小导通电阻、高开关速度的P60N06管为开关管、选用快速恢复二极管整流，减少反向导通时间，降低损耗。

This topic returns in view of the cut type switch spreads the type switch "to return for the predecessor design spreads the type electric power switch utilization in the LED lamps and lanterns" is the research direction, to achieve take reduces the power loss to replace the tradition operational amplifier pulse wave width accent as the goal using IC UC3842 changes part, the actuation returns spreads the type electric power switch's switch of Power MOSFET, so as to controls instead spreads the type electric power switch breakover closure's time then control voltage output size, achieves the output voltage to the load LED lamps and lanterns adjusts the LED lamps and lanterns brightness the goal.

各位大大抱歉~！因为英文底子不好！希望大家帮忙翻译一下，希望不要用翻译软体翻的最好是自己翻！拜托了！本专题针对切换式转换器的返驰式转换器为前身设计「返驰式电力转换器运用在LED灯具」为研究方向，为达到以减少功率损失为目的利用IC UC3842代替传统运算放大器脉波宽度调变部分，驱动返驰式电力转换器的Power MOSFET之开关，藉以控制反驰式电力转换器导通截止的时间进而控制电压输出的大小，输出电压至负载LED灯具达成调节LED灯具亮度的目的。

Methods 70 cases'12 leads cardiogram was studied before and after using key of resisting disturbance,to measure and observe change of swing and shape.

对70例受检者进行了使用抗干扰键前后的12导联心电图对比研究，测量并观察QRS波群振幅和形态的变化。

Microwave measurement ; Dielectric resonator ; Cavity resonator ; Evanescent waveguide

微波测量；介质谐振器；谐振腔；截止波导

This method may be used in the research of incompleteness in waveguide and resonant cavity with complicated structure.

这一方法可以用于波导的不连续性研究和任何复杂形状的谐振腔的计算。

In addition to their field distributions, the overall influences of core chirality on cutoff and dispersion characteristics are studied.

系统地分析了芯区手征导纳对其模式截止特性和色散特性的影响，并研究了这种波导结构的模场分布特性。

This paper presents the principle of measuring the chirality parameter of chiral materials in microwave circular waveguide.

本文提出了用普通微波圆波导测量系统测量手性材料复手性参数的方法。

Researched influence of frequency on characteristic of electromagnetic wave transmission in tunnels, and analyzed characteristic of electromagnetic wave transmission in circular, arches and curved tunnels by method of metal wave guide, and gives approximate formulas of attenuation rate. Main conclusions we obtain are as follows: in circular,rches tunnels, if frequency is higher, attenuation rate is smaller, it is beneficial for EM waves to transmit, in curved tunnel, higher frequency, more attenuation rate ...

研究了频率对井下电磁波传输特性的影响，采用金属波导法分析了圆形、拱形及弯曲隧道中电磁波的传输特性并给出衰减率近似公式，得出主要结论：在圆形和拱形隧道中，频率越高，衰减率越小，越有利于电磁波的传播；在弯曲隧道中，频率越高，衰减率越大，不利于电磁波的传播；通过特性曲线与井下实验数据相比较得出在900MHz左右为井下无线通信系统传输信号最佳频段。

Analysis of high-power millimeter wave circular waveguide TM01-TE11 mode converter.

牛新建，李宏福，谢仲怜。高功率毫米波圆波导TM01-TE11模式变换分析。

The system is assumed to be free of any losses and the fields of separated regions in circulator cavity are expanded by means of mode-matching method.

没有磁偏场作用时，我们提出一种行之有效的在给定频率下设计H面波导环行器中部份高度铁氧体性的新方法。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。