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PM 音標拼音: [p'i'ɛm] 相位調制 相位調制 PM n 1: an examination and dissection of a dead body to determine cause of death or the changes produced by disease [synonym: {autopsy}, {necropsy}, {postmortem}, {post-mortem}, {PM}, {postmortem examination}, {post-mortem examination}] 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 [synonym: {promethium}, {Pm}, {atomic number 61}] 3: the person who holds the position of head of the government in the United Kingdom [synonym: {Prime Minister}, {PM}, {premier}] 4: modulation of the phase of the carrier wave [synonym: {phase modulation}, {PM}] |
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