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nutation

XDict

n. 垂头,下垂,俯下,章动

PyDict

垂头,下垂,俯下,章动

WordNet (r) 3.0 (2006) (WordNet)

nutation
n 1: uncontrolled nodding

The Collaborative International Dictionary of English v.0.48 (gcide)

Nutation \Nu*ta"tion\, n. [L. nutatio a nodding, fr. nutare to
nod: cf. F. nutation.]
1. The act of nodding.
[1913 Webster]

So from the midmost the nutation spreads,
Round and more round, o'er all the sea of heads.
--Pope.
[1913 Webster]

2. (Astron.) A very small libratory motion of the earth's
axis, by which its inclination to the plane of the
ecliptic is constantly varying by a small amount.
[1913 Webster]

3. (Bot.)
(a) The motion of a flower in following the apparent
movement of the sun, from the east in the morning to
the west in the evening.
(b) Circumnutation.
[1913 Webster]

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英文字典中文字典相关资料:

Nutation - Wikipedia
Nutation (from Latin nūtātiō 'nodding, swaying') is a rocking, swaying, or nodding motion in the axis of rotation of a largely axially symmetric object, such as a gyroscope, planet, or bullet in flight, or as an intended behaviour of a mechanism
Nutation | Definition, Causes, Period, Facts | Britannica
Nutation, in astronomy, a small irregularity in the precession of the equinoxes Precession is the slow, toplike wobbling of the spinning Earth, with a period of about 25,772 years
What Is Nutation? Definition, Causes, and Types - ScienceInsights
Nutation is a small, rhythmic wobble in the axis of a spinning object You’ll encounter the term most often in astronomy, where it describes a slight nodding motion of Earth’s rotational axis, but it also applies to gyroscopes, spinning tops, and even growing plants
55. 2: Nutation - Physics LibreTexts
Superimposed on the long-term (26,000-year) precession of the Earth's axis is a more complicated, shorterterm motion called the nutation It is a complex motion composed of the superposition of several different harmonic motions, the largest of which has a period of about 18 6 years
Nutation and Precession | Earth
Nutation and precession are the periodic and long-term motion of the Earth's spin axis in space The direction of the Earth's axis in space, shown in orange, changes over time with respect to extremely distant objects, such as quasars
What Is Nutation? A Simple Definition and Explanation
Nutation is a small, rapid oscillation that occurs as the spinning body attempts to adjust to external influences acting upon it Nutation is best described as a nodding or swaying motion of a spinning object’s axis of rotation
NUTATION Definition Meaning - Merriam-Webster
The meaning of NUTATION is the act of nodding the head
What Is Nutation? From Earth’s Axis to Plant Growth
Nutation describes an oscillating motion derived from the Latin word nutare, meaning “to nod ” This concept applies to rotating systems across various scientific disciplines
NUTATION Definition Meaning | Dictionary. com
NUTATION definition: an act or instance of nodding one's head, especially involuntarily or spasmodically See examples of nutation used in a sentence
Nutation | Article about nutation by The Free Dictionary
Nutation is characteristic of stems, flower stalks, roots, leaves, coleoptiles, antennae, stolons, and other organs of higher plants The sporangiophores of lower plants also exhibit nutation

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