[电] azimuth-stabilized plan-position indicator

fāng wèi wěn dìng píng miàn wèi zhì zhǐ shì qì ㄈㄤ ㄨㄟˋ ㄨㄣˇ ㄉㄧㄥˋ ㄆㄧㄥˊ ㄇㄧㄢˋ ㄨㄟˋ ㄓˋ ㄓˇ ㄕˋ ㄑㄧˋ