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surd    
a. 无理数的,不尽根的,清音的
n. 无理数,不尽根数,清音

无理数的,不尽根的,清音的无理数,不尽根数,清音

surd
adj 1: produced without vibration of the vocal cords; "unvoiced
consonants such as `p' and `k' and `s'" [synonym: {unvoiced},
{voiceless}, {surd}, {hard}] [ant: {soft}, {sonant},
{voiced}]
n 1: a consonant produced without sound from the vocal cords
[synonym: {surd}, {voiceless consonant}]

Surd \Surd\, n. (Math.)
1. A quantity which can not be expressed by rational numbers;
thus, [root]2 is a surd.
[1913 Webster]

2. (Phon.) A surd element of speech. See {Surd}, a., 4.
[1913 Webster]


Surd \Surd\, a. [L. surdus deaf (whence the meaning, deaf to
reason, irrational), perhaps akin to E. swart. Cf.
{Sordine}.]
1. Net having the sense of hearing; deaf. [Obs.] "A surd . .
. generation." --Sir T. Browne.
[1913 Webster]

2. Unheard. [Obs.] --Kenrick.
[1913 Webster]

3. (Math.) Involving surds; not capable of being expressed in
rational numbers; radical; irrational; as, a surd
expression or quantity; a surd number.
[1913 Webster]

4. (Phonetics) Uttered, as an element of speech, without
tone, or proper vocal sound; voiceless; unintonated;
nonvocal; atonic; whispered; aspirated; sharp; hard, as f,
p, s, etc.; -- opposed to sonant. See Guide to
Pronunciation, [sect][sect]169, 179, 180.
[1913 Webster]

202 Moby Thesaurus words for "surd":
Gaussian integer, accented, algebraic number, algorismic,
algorithmic, aliquot, allophone, alveolar, apical, apico-alveolar,
apico-dental, articulated, articulation, aspiration, assimilated,
assimilation, back, barytone, bilabial, broad, cacuminal, cardinal,
cardinal number, central, cerebral, check, checked, close,
complex number, consonant, consonantal, continuant, deaf,
deaf and dumb, deaf-eared, deaf-mute, deafened, decimal,
defective number, dental, differential, digital, diphthong,
dissimilated, dissimilation, dorsal, dull-eared, earless,
epenthetic vowel, even, even number, explosive, exponential,
figural, figurate, figurative, finite, finite number, flat,
fraction, fractional, front, glide, glossal, glottal,
glottalization, guttural, hard, hard of hearing, heavy, high,
imaginary, imaginary number, impair, impossible, infinite,
infinity, integer, integral, intonated, irrational,
irrational number, labial, labialization, labiodental, labiovelar,
laryngeal, lateral, lax, light, lingual, liquid, logarithmic,
logometric, low, manner of articulation, mid, mixed number,
modification, monophthong, monophthongal, morphophoneme, mute,
muted, narrow, nasal, nasalized, negative, numeral, numerary,
numerative, numeric, occlusive, odd, open, ordinal, oxytone, pair,
palatal, palatalized, parasitic vowel, peak, pharyngeal,
pharyngealization, pharyngealized, phone, phoneme, phonemic,
phonetic, phonic, pitch, pitched, plosive, polygonal number,
positive, possible, posttonic, prime, prime number,
prothetic vowel, pure imaginary, radical, rational,
rational number, real, real number, reciprocal, rectangular number,
retroflex, round number, rounded, segmental phoneme, semivowel,
serial number, soft, sonant, sonority, speech sound, stone-deaf,
stop, stopped, stressed, strong, stunned, submultiple, syllabic,
syllabic nucleus, syllabic peak, syllable, tense, thick,
thick of hearing, throaty, tonal, tone-deaf, tonic, transcendental,
transcendental number, transfinite number, transition sound,
triphthong, twangy, unaccented, unhearing, unrounded, unstressed,
velar, vocable, vocalic, vocoid, voice, voiced, voiced sound,
voiceless, voiceless sound, voicing, vowel, vowellike, weak,
whole number, wide, word-deaf


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  • Surds - Math is Fun
    When we can't simplify a number to remove a square root (or cube root etc) then it is a surd Have a look at these examples (including cube
  • Surd - Wikipedia
    This disambiguation page lists articles associated with the title Surd If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article
  • SURD Definition Meaning - Merriam-Webster
    Both surd and its more common cousin absurd come from the Latin word surdus, meaning "unhearing, deaf, muffled, or dull " Absurd traveled through Middle French before arriving in English in the early 16th century
  • surd是什么意思_surd的翻译_音标_读音_用法_例句_爱词霸在线词典
    Example 1 : Solve the following quadratic equations, leave the answers in surd form 例 1: 解下列的二次方程, 如果需要,以根式表示 互联网
  • surd - 搜索 词典
    1 But I don ' t think so; in view of the fact I ' m not quite surd 但 不 这样 认为， 鉴于 事实 说明， 我 不 相信 是 这样。
  • Surd -- from Wolfram MathWorld
    The term "surd" has a special meaning in the Wolfram Language, where the principal root of a complex number can be found as z^ (1 n) or equivalently Power [z, 1 n] However, when is real and only real roots are of interest, the command Surd [x, n] can be used
  • Surds and Indices - Definition, Types, Rules, and Practice Problems
    The Latin meaning of the word "Surd" is deaf or mute In earlier days, Arabian mathematicians called rational numbers and irrational numbers as audible and inaudible
  • 不尽根_百度百科
    本词条由 “科普中国”科学百科词条编写与应用工作项目 审核 。 不尽根（surd）是数学术语，指一个数的 n次方根 不能化为有限小数或无法通过 有理数 精确表示的 无理数 形式，其标准表达式为ⁿ√a（a为被开方数，n为阶数） [2-4]。
  • 不尽根数
    不尽根数在英语中叫 "Surd"。 这字是从哪里来的？ 在大约公元 820 年， al-Khwarizmi （就是制定 "Algorithm"（运算法则）这个词的波斯人) 称无理数为 "'inaudible" （不可闻的）。 。。。。。 后来被翻译到拉丁文 surdus ("聋" 或 "哑")
  • Introduction to SURD - YouTube
    Surds are the roots of positive rational numbers that can't be simplified to a whole number Surds are numbers left in square root form that are used when det





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