sweep指令错误

killyou

cylind,0.18,0.195,,L1
lsel,a,,,638
lsel,a,,,643
lsel,a,,,660,661
lesize,all,,,N3
lsel,all
lesize,669,,,N1
aatt,2,,2
vatt,2,,3
amesh,38
vsweep,2,38,22
cylind,0.18,0.195,L3,0.48
lsel,s,,,724,729
lsel,a,,,731,732
lesize,all,,,N3
lsel,all
lesize,734,,,N1
amesh,288
vsweep,5,288,287

大侠们帮我看下，用sweep划分网格时，同样的模型，同样的尺寸，为什么体5划分成功，而体2是失败的