A.5000 B.7500 C.10000 D.12000
A.3-30MPa/s B.30-40MPa/s C.15～40MPa/s D.40～60MPa/s
A.0.25 B.0.60 C.0.80 D.2.00
A.结构截面最大尺寸的1/4 B.结构截面最小尺寸的1/2 C.结构截面最大尺寸的1/2 D.结构截面最小尺寸的1/4
A.0.5mm B.1mm C.1.5mm D.2mm
