A.1~4% B.0.1~0.4% C.10~40% D.0.3~8%
A.0.3%~0.8% B.3~8% C.30%~80% D.4~12%
A.凸形豎曲線、凹形豎曲線B.突起豎曲線、低洼豎曲線C.橫形豎曲線、直形豎曲線D.傾斜豎曲線、水平豎曲線