组别

DRIL长度

CMT

EZ断裂长度

DRIL ≤ 500 μm组(n = 12)

390.00 (222.50, 460.00)

306.00 (262.00, 407.50)

225.00 (162.50, 487.50)

DRIL > 500 μm组(n = 18)

850.00 (659.50, 1000.00)

514.50 (308.50, 739.25)

585.00 (400.00, 880.00)

Z

−4.432

−2.075

−3.264

P

0.001

0.038

0.001