求翻译：图示为不同级数的Y型的微通道中心截面的压力平均值分布，从图中我们可以看出微通道在分叉处产生了明显的压力回升现象。这是因为在分叉处截面面积的突然增大导致液体回流的速度减小，然后从而导致了压力的回升。当l=4时，通道两端的最大的压力差值为26kpa,,而当l=1时通道两端的压差为14kpa.通过这个我们可以了解通道级数的增加将引起两端的压力差增大，并且随着分叉级数的增加，通道的面积越来越小，导致分叉处的压力回升越来越小。是什么意思？

The icon for the average of different levels of the y-center section of microchannel pressure distribution from the figure we can see that the microchannel in the bifurcation of the pressure rebound phenomenon. This is because the sudden increase of the bifurcation of the cross-sectional area to cau

Shown with different levels of the micro-channel Y Center section of the average pressure distribution, in the diagram, we can see that micro-channel in the fork had a clear rise in pressure. This is because the fork in the cross-sectional area of the sudden cause liquid back to the speed decreases,

Diagram for different series of y-type micro-channel average pressure dist