脉

Pulsating heat transfer phenomenon is applied to produce a kind of pulsating combustor with high efficiency and low pollution.

详细脉动传热问题在近几十年得到了国内外广泛的关注。

This paper investigates the effect of dead time on common-mode voltage for PWM inverter.

改进的空间矢量脉宽调制法有利于降低共模电压，但由于没有考虑死区的影响，实际效果受到较大影响。

Inverter ; pulse width modulation/common-mode voltage ; control strategy

逆变器；脉宽调制/共模电压；控制策略

Reducing and canceling common-mode voltage methods are presented respectively using SPWM and SVM . Simulation results validate their correctness.

针对常用的变频器控制策略—正弦波脉宽调制SPWM和空间矢量调制SVM，分别提出了降低和消除共模电压的改进策略，并用仿真结果验证了其正确性。

Wind power generation ; PWM rectifier ; interface circuit ; common-mode voltage

风力发电；脉宽调制整流器；接口电路；共模电压

In software, the method of reducing commutation torque pulsation is brought into effect.

软件设计中采用了换相转矩脉动抑制方法。

Further, with the comparison of computation results and test results, validating the computing methods.

另外，通过与模型机组压力脉动试验结果的比较，验证了计算方法的正确性。

And methods of modification are proposed, which are mainly presented on clamping circuit and method of compensating for the errors of count results. Thus the performance of system can get further improvement.

在测试过程中，发现了现有实现技术的某些不足，并有针对性的提出了改进，主要体现在计时电路中的钳位电路设计和脉宽补偿思想，有利于进一步改善系统性能。

Complex of the time series of differential pressure fluctuation transmission.

加压流化床中差压脉动时间序列的复杂性。

The compressible and oscillating fluid flow, heat transfer phenomenon in the regenerator and pulse tube have been studied in detail.

通过计算详细地分析了回热器和脉管内的流场和温度场，以及其他参数的变化。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。