英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

PM    音标拼音: [p'i'ɛm]
相位调制

相位调制

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}]

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • AM and PM: What Do They Mean? - timeanddate. com
    AM means before noon This is the 12-hour period from midnight to noon PM means after noon It covers the 12 hours from noon to midnight Using numbers from 1 to 12, followed by am or pm, the 12-hour clock system identifies all 24 hours of the day
  • What Do A. M. and P. M. Stand For? - Readers Digest
    The abbreviation p m stands for post meridiem, meaning “after noon” or “after midday ” This applies to all times from 12 p m to 11:59 p m While the origin of the terms can be traced back to
  • What Do “A. M. ” And “P. M. ” Stand For? - Dictionary. com
    P m is an abbreviation of post merīdiem, meaning—you guessed it—“after midday ” These two terms help keep ambiguity at bay in the 12-hour time system What does m mean? There is a third, lesser-known abbreviation in this system: m From the Latin merīdiēs (“midday”), it means “noon ”
  • PM - Wikipedia
    PM or pm (also written P M or p m ) is an abbreviation for Latin post meridiem, meaning "after midday" in the 12-hour clock PM or Pm or pm may also refer to: PM Magazine, an American TV news program (1976–1991)
  • What Do AM and PM Stand For? - Britannica
    The abbreviation am stands for ante meridiem, “before midday” in Latin, while pm means post meridiem, or “after midday ” The concept of a 12-hour clock has been around since ancient times
  • p. m. - Oxford Learners Dictionaries
    Definition of p m abbreviation in Oxford Advanced Learner's Dictionary Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more
  • PM: Definition, Meaning, and Examples - usdictionary. com
    "PM" can refer to the time after noon, a prime minister, the chemical symbol for promethium, or the act of sending a private message online This small abbreviation carries meaning across timekeeping, politics, science, and digital communication
  • Is noon 12 am or 12 pm? | Royal Museums Greenwich
    What does am and pm mean? The 12-hour clock divides the 24-hour day into two periods am stands for the Latin ante meridiem, translating to "before midday" This is the time before noon pm stands for post meridiem or "after midday" – the time after noon Noon is therefore neither 'ante' (am) nor 'post' (pm) meridiem
  • What Do AM and PM Stand For? | Meaning Examples - QuillBot
    AM and PM stand for “ante meridiem” (before midday) and “post meridiem” (after midday) In parts of the world with a 12-hour time system, people use “a m ” or “p m ” to clarify which hour they’re referring to For example, 6:30 a m is morning, and 6:30 p m is evening
  • Why We Say a. m. and p. m. and What They Actually Mean - time. now
    Turns out, the answer goes back to ancient Rome and the way they watched the sky Quick insight: a m means “ante meridiem” or “before midday ” p m means “post meridiem” or “after midday ” Both come from Latin and track the sun’s position What a m and p m Actually Stand For





中文字典-英文字典  2005-2009