求翻译：假设有N个传感器节点部署在一个半圆形区域（圆形区域亦可，没有本质区别），以sink节点作为圆心，如图1所示。将半圆平均分为n(3≤n≤4)个扇形区域（注意，这里的n不宜过大，因为n越大，将使得后文中的簇过于狭窄），文中称扇形区域为扇区，最左边为第1扇区，向右依次为第2、3扇区。再以sink为圆心分别以d,2d,3d……为半径划分为m层，且d≤50米，最靠圆心的为第一层，向外依次为第二层、第三层……，从而得到图1（1）所示结构。是什么意思？

Suppose there are n sensor nodes deployed in a semi-circular area (circular area can also be no essential difference) to the sink node as the center of the circle shown in Figure 1. Will semicircle divided into n (3 ≤ n ≤ 4) fan-shaped region (note that, where n should not be too large, because the

If you have a sensor node N deployed in a semi-circular area (circular area, there is no essential difference between) to sink nodes as a circle, as shown in Figure 1. An average score of the half-round n (3 ≤ n ≤ 4) fan-shaped area (note, where n is not too large, as the larger n, which will make t

Suppose there are n sensor node deployment in a semi-circular region (circular region, there is no essential difference between) to sink node as a circle, as shown in Figure 1. Semi average is divided into n (3 ≤ n ≤ 4) fan-shaped region (