delta
n. 三角洲, 希腊字母的第四个字 [医] δ(希腊文的第四个字母), 丁种, 三角, 三角形区
发音
词形变化
释义与例句
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1.
The fourth letter of the modern Greek alphabet Δ, δ.
德尔塔
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2.
A landform at the mouth of a river where it empties into a body of water.
三角洲
Nile Delta
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3.
Alternative letter-case form of Delta from the NATO/ICAO Phonetic Alphabet.
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4.
The symbol Δ; A change in a quantity, likely from "d" for "difference".
工程 数学 物理ΔV - "delta vee"(change in velocity, used in rocketry and orbital mechanics)
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5.
The rate of change in an option value with respect to the underlying asset's price.
商务 金融 -
6.
A value in delta notation indicating the relative abundances of isotopes.
化学 -
7.
The set of differences between two versions of a file.
计算机 工程 数学When you update the file, the system will only save the deltas.
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8.
A small but noticeable effect. Compare epsilon.
非正式 计算机 工程 数学This will slow the main code path down, but only by delta.
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9.
The angle subtended at the center of a circular arc.
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10.
A type of cargo bike that has one wheel in front and two in back.
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11.
The closed figure produced by connecting three coils or circuits successively, end for end, especially in a three-phase system.
定语 商务 工程 物理delta winding; delta connection; delta current
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12.
A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment.
美国 政治 军事 -
13.
a star that is usually the fourth brightest of a constellation.
天文 -
14.
one of four baryons consisting of up and down quarks with a combined spin of 3/2: Δ⁺⁺ (uuu), Δ⁺ (uud), Δ⁰ (udd), or Δ⁻ (ddd)
物理 -
15.
Ellipsis of delta variant (variant of the SARS-CoV-2 virus).
医学
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1.
To calculate the differences between the characters in an enciphered text and the characters a fixed number of positions previous.
计算机 工程 数学 -
2.
To compare two versions of the same file in order to determine where they differ (where a programmer has made edits).
计算机 工程 数学
词汇关系
上位词 5
整体词 1
相关短语
词源
From Ancient Greek δέλτα (délta), borrowed from a Phoenician word for "door", ultimately from Proto-Semitic *dalt-. Doublet of dalet. * (river): from the triangular shape of the majuscule Greek letter delta Δ * (USSF): from the delta wing, symbol of the USSF, a triangular wing, shaped like the majuscule Greek letter delta Δ
来源:wiktionary