pm.

• phase modulation 调相； abbr.；=paymaster

英英释义

名词 pm:

1. 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 the United Kingdom

4. modulation of the phase of the carrier wave