短語詞組短語grazing approach angle 切線進(jìn)入角grazing incidence angle 掠入射角grazing g angle 入射余角beam grazing angle 波束掠射角high grazing angle 大入射余角high -grazing angle 高入射余角critical grazing angle 臨界掠射角low grazing angle 低入射余角下 返回 grazing angle