[电] cgs electromagnetic system of un-its

lí mǐ kè miǎo zhì diàn cí dān wèi ㄌㄧˊ ㄇㄧˇ ㄎㄜˋ ㄇㄧㄠˇ ㄓˋ ㄉㄧㄢˋ ㄘˊ ㄉㄢ ㄨㄟˋ