单词	picosecond
释义	picosecond /ˈpiːkəʊsɛkənd / /ˈpʌɪkəʊsɛkənd / (abbreviation ps) noun One trillionth of a second: the first picosecond of the Big Bang... A typical chemical reaction takes place on a timescale of about a picosecond. In contrast, most current MD simulations for larger realistic systems are usually restricted to a few nanoseconds or picoseconds. They plan to use a UV laser to fire a 5-joule pulse lasting less than half a picosecond.
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