extension中文什么意思

n.
1.伸长，伸展，延长，延伸，扩展，扩大；广度，范围。
2.延期；〔美国〕(房屋的)增建部分，(铁路等的)延长线，(电话的)分机；增设部分；附加物。
3.(语句等的)铺张。
+更多解释...4.【物理学】广延性。
5.【军事】延伸。
6.【医学】牵伸术；伸直；(病变)蔓延，扩展。
7.【商业】延期还债认可书。
8.【逻辑学】外延(opp. intension)； 【数学】开拓；广延性。
9.会计从另一栏转来或算出的金额。
短语和例子
an extension of a loan 借款的延期偿还。 a university extension 大学的附设部分(如函授班、夜校等)。

• by extension:    按扩展名
• extension; extension telephone:    分机
• abelian extension:    阿贝耳扩张

例句与用法

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1. We must expand our own education, research, and extension .
   我们的教育，研究和推广事业必须扩大。
2. These spurs produce short extension growth in the early part of the season .
   短枝在生长季前期缓慢延长生长。
3. The b-module mb is said to be obtained from m by extension of scalars .
   我们说B-核MB是从M验纯量扩充而得到的。
4. Flower initiation is often associated with a reduction in shoot extension .
   花的孕育通常与抑制枝梢的生长有关。
5. Only bearings and extension joints need to be controlled at regular intervals .
   只有支座和伸缩缝需要定期检查和调整。

英文释义

名词

1. act of expanding in scope; making more widely available; "extension of the program to all in need"
2. act of stretching or straightening out a flexed limb
3. an educational opportunity provided by colleges and universities to people who are not enrolled as regular students
   同义词：extension service, university extension
4. an addition that extends a main building
   同义词：annex, annexe, wing
5. an addition to the length of something
   同义词：elongation
6. an additional telephone set that is connected to the same telephone line
   同义词：telephone extension, extension phone
7. amount or degree or range to which something extends; "the wire has an extension of 50 feet"
   同义词：lengthiness, prolongation
8. the ability to raise the working leg high in the air; "the dancer was praised for her uncanny extension"; "good extension comes from a combination of training and native ability"
9. the most direct or specific meaning of a word or expression; the class of objects that an expression refers to; "the extension of `satellite of Mars'' is the set containing only Demos and Phobos"
   同义词：reference, denotation
10. the spreading of something (a belief or practice) into new regions
    同义词：propagation
11. a string of characters beginning with a period and followed by one or more letters; the optional second part of a PC computer filename; "most applications provide extensions for the files they create"; "most BASIC files use the filename extension .BAS"
    同义词：filename extension, file name extension
12. a mutually agreed delay in the date set for the completion of a job or payment of a debt; "they applied for an extension of the loan"