p-m
英['piː'em]
美['piː'em]
- pm n.下午；午后
- PM-engine 多孔介质（PM）发动机
- PM-TC (=prolinomethyltetracycline)脯甲四环素
- pm. phasemodulation调相；abbr.；=paymaster
- PMA =PacificMaritimeAssociation太平洋海运协会[美]
名词 pm:
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an examination and dissection of a dead body to determine cause of death or the changes produced by disease
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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
-
the person who holds the position of head of the government in the United Kingdom
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modulation of the phase of the carrier wave
