英语词汇“PI”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

PI1

abbreviation

Private investigator.

pi2

/pʌɪ

/

noun

1The sixteenth letter of the Greek alphabet (Π, π), transliterated as ‘p’.This is true of no other letter of the alphabet except pi, and here the name is a natural development of the Semitic name pe....

Pi is the sixteenth letter of the Greek alphabet. In the system of Greek numerals it has a value of 80.
The western Greek alphabet changed pi into a backwards loop shape.

1.1The numerical value of the ratio of the circumference of a circle to its diameter (approximately 3.14159).Saying that pi is 3.14 without addressing the fact that it goes on infinitely afterward overlooks the true essence of the number....

So far, pi has been calculated to 1.24 trillion decimal places with the aid of a supercomputer.
The circumference of a circle can be found by multiplying pi (which is equal to 3.14) by the diameter of the circle.

From the initial letter of Greek periphereia 'circumference'

1.2 (Pi) [followed by Latin genitive] Astronomy The sixteenth star in a constellation: Pi Herculis...

Lower letters are generally assigned to brighter stars, but a star designated pi is not necessarily the 16th brightest star of the constellation (for example, pi Puppis is number two in brightness in the constellation Puppis).
Pi Herculis is particularly noticeable for its reddish complexion and is an excellent place to begin studying the constellation.
The red giant Pi Leonis in the constellation of Leo the Lion has a radius 80 times larger than our own Sun.

1.3 [as modifier] Chemistry & Physics Relating to or denoting an electron or orbital with one unit of angular momentum about an internuclear axis: the π orbital system of the benzene molecule...

Both of the electrons in the pi bond are found in the pi bonding orbital.
The lowest pi orbital of benzene is called the A2u orbital.
The bonding pi orbital is lower in energy than the atomic p orbitals, whereas the antibonding pi orbital is higher in energy than the atomic pi orbitals.

symbol

1 (π) The numerical value of pi.

2 (Π) Osmotic pressure.

3 (Π) Mathematical product.

Origin

Greek.

Rhymes

pi3

/pʌɪ

/

adjective British informal

Short for pious.

单词	PI
释义	PI1 abbreviation Private investigator. pi2 /pʌɪ / noun 1The sixteenth letter of the Greek alphabet (Π, π), transliterated as ‘p’.This is true of no other letter of the alphabet except pi, and here the name is a natural development of the Semitic name pe.... Pi is the sixteenth letter of the Greek alphabet. In the system of Greek numerals it has a value of 80. The western Greek alphabet changed pi into a backwards loop shape. 1.1The numerical value of the ratio of the circumference of a circle to its diameter (approximately 3.14159).Saying that pi is 3.14 without addressing the fact that it goes on infinitely afterward overlooks the true essence of the number.... So far, pi has been calculated to 1.24 trillion decimal places with the aid of a supercomputer. The circumference of a circle can be found by multiplying pi (which is equal to 3.14) by the diameter of the circle. From the initial letter of Greek periphereia 'circumference' 1.2 (Pi) [followed by Latin genitive] Astronomy The sixteenth star in a constellation: Pi Herculis... Lower letters are generally assigned to brighter stars, but a star designated pi is not necessarily the 16th brightest star of the constellation (for example, pi Puppis is number two in brightness in the constellation Puppis). Pi Herculis is particularly noticeable for its reddish complexion and is an excellent place to begin studying the constellation. The red giant Pi Leonis in the constellation of Leo the Lion has a radius 80 times larger than our own Sun. 1.3 [as modifier] Chemistry & Physics Relating to or denoting an electron or orbital with one unit of angular momentum about an internuclear axis: the π orbital system of the benzene molecule... Both of the electrons in the pi bond are found in the pi bonding orbital. The lowest pi orbital of benzene is called the A2u orbital. The bonding pi orbital is lower in energy than the atomic p orbitals, whereas the antibonding pi orbital is higher in energy than the atomic pi orbitals. symbol 1 (π) The numerical value of pi. 2 (Π) Osmotic pressure. 3 (Π) Mathematical product. Origin Greek. Rhymes ally, Altai, apply, assai, awry, ay, aye, Baha'i, belie, bi, Bligh, buy, by, bye, bye-bye, chi, Chiangmai, Ciskei, comply, cry, Cy, Dai, defy, deny, Di, die, do-or-die, dry, Dubai, dye, espy, eye, fie, fly, forbye, fry, Frye, goodbye (US goodby), guy, hereby, hi, hie, high, I, imply, I-spy, July, kai, lie, lye, Mackay, misapply, my, nearby, nigh, Nye, outfly, passer-by, phi, pie, ply, pry, psi, Qinghai, rai, rely, rocaille, rye, scry, serai, shanghai, shy, sigh, sky, Skye, sky-high, sly, spin-dry, spry, spy, sty, Sukhotai, supply, Tai, Thai, thereby, thigh, thy, tie, Transkei, try, tumble-dry, underlie, Versailles, Vi, vie, whereby, why, wry, Wye, xi, Xingtai, Yantai pi3 /pʌɪ / adjective British informal Short for pious.
随便看	the Hanse the hard way the heavens open the heavy mob the Herdsman the high ground the Highlands the Holy City the Holy Grail the Holy Sacrament the Holy Trinity the Horn the House the Household the how and why the Hun the Hunter the hustings the hyaline the I the Ice Age the icing (also frosting) on the cake the Incarnation theine the Inner House of the Court of Session