[电] electrostatic curve of electorn
diàn zǐ guǎn jìng tài tè xìng qū xiàn ㄉㄧㄢˋ ㄗˇ ㄍㄨㄢˇ ㄐㄧㄥˋ ㄊㄞˋ ㄊㄜˋ ㄒㄧㄥˋ ㄑㄩ ㄒㄧㄢˋ