source-and-sink method

By analysis to sound source of centrifugal ventilator, the paper discusses generant mechanism of pneumatic noise, then noise decreasing method is offered. The measure put emphasis on improving structural parameter of ventilator, which has guidance sense for production.

通过对离心风机噪声源的分析，探讨了气动噪声产生的机理，从而提出了降噪方法，其降噪措施主要是从改进风机本身结构参数入手，对生产实际具有一定的指导意义。

Because I have the source code available for this method, I'll show you how I would add the timing information directly.

因为有这个方法的源代码，所以我将为您展示如何直接添加计时信息。

In this paper, a series of TiO2 photocatalysts were prepared using titanium tetrachloride as raw material. C-TiO2 was synthesized using citric acid as carbon source by a simple hydrolysis method.

本论文以四氯化钛为原料，采用沸腾回流法，以柠檬酸为碳源，制备了碳掺杂纳米TiO2。

Study on convergence to steady state of the time splitting method for conservation laws with source terms

带源项的守恒系统时间分裂算法定常解的收敛性研究

The synchronization method of the pulse source of the MULTI-PLEX time division phase modulation communication receiver

多路时分调位通信接收机脉冲源的同步方法