皮秒 Save Sign in to save words pímiǎo ㄆㄧˊ ㄇㄧㄠˇ picosecond, ps, 10^-12 s Character by character 皮(pí)surname Pi 秒(miǎo)second A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0