picoseconds 📖 中文释义 (picosecond 的复数) [计] 微微秒 🧩 词形变化 原形 picosecond 📘 English Definition(英文释义) plural of picosecondn. one trillionth (10^-12) of a second; one thousandth of a nanosecond ← picosecond P 字母词表 picosulfate sodium →