A.4%~10% B.6%~15% C.8%~20% D.10%~25%
A.抗压 B.抗剪 C.抗扭 D.抗拉
A.0.4 B.0.5 C.0.6 D.0.7
A.5% B.10% C.15% D.20%
A.5~10m B.10~15m C.15~20m D.20~25m