PM是表示下午。上午的表示是AM。
PM,拉丁語post meridiem的縮寫,意為下午,用於十二小時制。所謂“下午”,即每天的12:00:00~23:59:59時段。
擴展資料:
PM['pi '?m]
abbr. (拉)下午(Post Meridiem,等於afternoon);調相(Phase Modulation)
abbr. 產品經理(Product Manager)
an examination and dissection of a dead body to determine cause of death or the changes produced by disease。?
2.a soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium。
3.the person who holds the position of head of the government in England。
4.modulation of the phase of the carrier wave。
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