[电] field-enhanced photoelectric em-ission

chǎng zēng jiā guāng diàn fàng shè ㄔㄤˇ ㄗㄥ ㄐㄧㄚ ㄍㄨㄤ ㄉㄧㄢˋ ㄈㄤˋ ㄕㄜˋ