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A novel edge-triggered D-flip-flop based on a resonant tunneling diode is proposed and used to construct a binary frequency divider.

提出了一种基于共振隧穿二极管的新型边沿触发D触发器并将之用于构成二进制分频器。

The circuit model of inductance-coupled double-ring electrodeless lamp is researched and its equivalent simplified circuit is analyzed,based on which the frequency-domain characteristics and design of its resonant ring are discussed in detail.

0引言无极灯具有高光效、高显色性、无频闪和长寿命的优良特性，是一种具有良好发展前景的新型气体放电光源[1-6]。在无极灯电子镇流器照明系统中，电子镇流器的分析和设计至关重要。

A hollow chamber whose dimensions allow the resonant oscillation of electromagnetic or acoustic waves.

一种尺度能允许电磁或声波共鸣的空心的室。

Based on the ellipsoidal coordinates, we obtain the spacial distribution of electric potentials of a composite of a coated ellipsoid embedded in an infinite host via solving the Laplace equations and matching the boundary conditions. Meanwhile, we also obtain the partially resonant condition of the coated ellipsoid.

通过引入椭球坐标系，利用拉普拉斯方程及其边界条件，求出了带壳椭球颗粒镶嵌在无限大线性基质中的空间电势分布，并进一步得出了带壳椭球颗粒的部分共振条件。

According to the field plot of TE10 wave mode in rectangular ridged waveguide,the equivalent capacitance and equivalent inductance are approximately calculated by quasi-static method,and the resonant frequency which is namely cutoff frequency is derived.

由矩形正脊波导中主模TE10波模的分布结构特征，用准静态方法近似的计算出等效电容和等效电感，从而计算出谐振频率，也就是矩形正脊波导的截止频率。

The equivalent form for the PI regulator in stationary form is deduced and a resonant link is proposed.

最后分析了旋转坐标系下能实现稳态无静养的比例积分器在静止坐标系下的等效形式，提出包含单次谐波内模的谐振控制器。

Based on a series of signal process and noise source identification techniques, especially the major noise source identification methods, such as expurgation method, sound intensity analysis, spectrum analysis vibro-acoustic correlation analysis and so on, the pass-by noise control of SC7080A and SC6360B are studied in detail. By the roadway and dais experiments, the major noise and radiating parts are identified and some economical controlling methods are made. For the SC7080A, to control the emissing noise from the intake and shell vibration of air cleaner, a intake muffler is installed between the air cleaner and intake valve. Based on the theory of Helmholtz resonator, One three-parallel-connected resonant silencer is designed and trial-manufactured. For the SC6360B, the attenuation performance of exhaust muffler in high frequency region is improved. To reduce the vibration noise of shell part, the structure of oil sump tank, exhaust manifold shield and exhaust manifold shield are analyzed and improved. At the same time, some measures, such as sound absorption, sound insulation, are taken to reduce the noise of engine surface emissivity and a sound shield is designed.

本文首先综述了目前国内外汽车加速噪声控制的现状、主要方法和技术措施，在此基础上，结合SC7080A和SC6350B汽车的车外加速噪声水平及现状，综合运用分别运行法、声强法、频谱分析法、声振相干函数法等现代噪声源识别方法，对SC7080A和SC6360B汽车进行了准确详细的车外加速噪声源识别并提出了经济可行的控制方案，针对SC7080A，主要在空气滤清器和进气阀门之间的进气管道上加装进气消声器，抑制空气滤清器壳体表面和进气口两处的噪声辐射，根据Helmholtz共振腔原理设计了三腔并联旁支型共振消声器，并进行了工程化设计和试制；针对SC6360B，主要改善了排气消声器在高频段的消声性能，对罩壳类零件进行了结构改进，降低了其表面噪声的辐射，并对发动机舱进行了吸声、隔声处理，设计了发动机隔声罩。

Then an improved design method of resonant tank combining first harmonic approximation and simulation in time domain was proposed.

基于所提出的方法设计的参数建立一台220 W的样机，实验结果证实了所提出改进型设计方法的正确性和可行性。

The difference between a hard switching and quasi resonant flyback converter is the turn on time point of the primary

硬开关和准谐振反激变换器之间的差异在于一次侧开关的开启时间点。

Due to the fact, that the 800V quasi resonant flyback has lower

事实上，800伏特准谐振反激变换器拥有更低的峰值

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。