statunit

例句：

1. 1. The statunitfor measuring the length of a rod isthe distance from one end to the other.
   测量杆长度的统计单位是从一个端点到另一个端点的距离。
2. 2. Thestatunit for measuring the area ofa square is the length of its diagonal.
   测量正方形面积的统计单位是其对角线的长度。
3. 3. Thestatunit for measuring the volume of acylinder is the product of its radius andheight.
   测量圆柱体体积的统计单位是半径和高度的乘积。