[机] angular extropolation light-seat-tering method

jiǎo wài tuī sǎn guāng fǎ ㄐㄧㄠˇ ㄨㄞˋ ㄊㄨㄟ ㄙㄢˇ ㄍㄨㄤ ㄈㄚˇ