A.0.14% B.0.16% C.4% D.6%
A.0.12%~0.13% B.0.14%~0.16% C.0.17%~0.18% D.0.19%~1.10%
A.波峰 B.波谷 C.波長的1/3處 D.波谷與波峰之間