简要介绍了雪崩光电二极管(APD)阵列光子计数成像原理，建立了基于泊松点过程的APD阵列的单光子响应模型。
A photon counting image model based on avalanche photodiode (APD) arrays response characters and Poisson point process of photons was developed.
其一是圆管层流（又称泊肖叶流动），得到其流量和沿管方向压力梯度之间的解析关系式。
One was the laminar flow in the pipe(also called the Poiseuille flow). The analytic form of the relationship between the flow rate and the pressure gradient along the pipeline was obtained.
其一是圆管层流（又称泊肖叶流动），得到其流量和沿管方向压力梯度之间的解析关系式。
One was the laminar flow in the pipe(also called the Poiseuille flow). The analytic form of the relationship between the flow rate and the pressure gradient along the pipeline was obtained.
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