飛秒 Save Sign in to save words Simplified: 飞秒 fēimiǎo ㄈㄟ ㄇㄧㄠˇ femtosecond, fs, 10^-15 s Character by character 飛(fēi)fly 秒(miǎo)second A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0