expansion
n. 扩充, 开展, 膨胀 [计] 扩展
发音
词形变化
教材释义与例句
膨胀；阐述；扩张物
释义与例句
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1.
An act, process, or instance of expanding.
扩张
扩大
展开
可数 不可数The expansion of metals and plastics in response to heat is well understood.
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2.
An act, process, or instance of expanding.
The fractional change in unit length per unit length per unit temperature change.
可数 不可数Look up the expansion of 1018 steel at stick welding temps and figure out how far this thing's gonna bend once we weld it up.
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3.
An act, process, or instance of expanding.
A new addition.
可数 不可数My new office is in the expansion behind the main building.
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4.
An act, process, or instance of expanding.
A product to be used with a previous product.
可数 不可数This expansion requires the original game board.
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5.
An act, process, or instance of expanding.
That which is expanded; expanse; extended surface.
可数 不可数 -
6.
An act, process, or instance of expanding.
The operation of steam in a cylinder after its communication with the boiler has been cut off, by which it continues to exert pressure upon the moving piston.
可数 不可数 -
7.
An act, process, or instance of expanding.
The replacement of a short name (e.g., acronym, initialism, alphanumeric symbol, abbreviation) with the longer name that is synonymous with it, as when spelling out acronyms to ensure clarity for a general audience.
可数 不可数Expansion of acronyms is often helpful for nonexpert readers (anacronyms excluded).
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8.
An act, process, or instance of expanding.
The replacement of a short name (e.g., acronym, initialism, alphanumeric symbol, abbreviation) with the longer name that is synonymous with it, as when spelling out acronyms to ensure clarity for a general audience.
The string of text thus substituted.
可数 不可数The acronym "FNDs" can mean either "functional neurologic disorders" or "focal neurologic deficits", so you'd better use the expansion instead of the acronym, for clarity in this context; readers of this paragraph may not have read, or remember, which definition you used 40 pages earlier.
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9.
An act, process, or instance of expanding.
Ellipsis of expansion pack.
可数 不可数 游戏 -
10.
An act, process, or instance of expanding.
An increase in the market value of an economy over time.
可数 不可数 金融 -
11.
An act, process, or instance of expanding.
Stretching of geometric objects with flat sides.
可数 不可数 数学 -
12.
An act, process, or instance of expanding.
The rewriting of an expression as a longer but equivalent sum of terms.
可数 不可数 数学
词汇关系
相关短语
词源
Borrowed from French expansion, from Latin expānsiō. By surface analysis, expand + -sion.
来源：wiktionary