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expansion [ik'spænʃәn]
n. 扩充, 开展, 膨胀
[计] 扩展
[化] 扩展; 扩建; 膨胀
[医] 扩张, 膨胀
[经] 扩充, 扩大, 膨胀
- Metals undergo expansion when heated.
金属加热时会膨胀。 - This book is an expansion of the play he wrote before.
这本书是他以前写的剧本的扩充。 - A congenital condition characterized by the incomplete expansion of the lungs at birth.
肺膨胀不全一种先天性疾病，特征为出生时肺部不完全膨胀
expansion
[ noun ]
- the act of increasing (something) in size or volume or quantity or scope
- a function expressed as a sum or product of terms
- a discussion that provides additional information
- adding information or detail
<noun.act>
<noun.linkdef>
the expansion of (a+b)^2 is a^2 + 2ab + b^2
<noun.communication>
<noun.act>
Expansion \Ex*pan"sion\, n. [L. expansio: cf. F. expansion.]
1. The act of expanding or spreading out; the condition of
being expanded; dilation; enlargement.
2. That which is expanded; expanse; extend surface; as, the
expansion of a sheet or of a lake; the expansion was
formed of metal.
The starred expansion of the skies. --Beattie.
3. Space through which anything is expanded; also, pure
space.
Lost in expansion, void and infinite. --Blackmore.
4. (Economics & Commmerce) an increase in the production of
goods and services over time, and in the volume of
business transactions, generally associated with an
increase in employment and an increase in the money
supply. Opposite of {contraction}.
Syn: economic expansion. [1913 Webster +PJC]
5. (Math.) The developed result of an indicated operation;
as, the expansion of (a + b)^{2} is a^{2} + 2ab + b^{2}.
6. (Steam Engine) 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.
7. (Nav. Arch.) The enlargement of the ship mathematically
from a model or drawing to the full or building size, in
the process of construction. --Ham. Nav. Encyc.
Note: Expansion is also used adjectively, as in expansion
joint, expansion gear, etc.
8. an enlarged or extended version of something, such as a
writing or discourse; as, the journal article is an
expansion of the lecture she gave.
[PJC]
9. an {expansion joint}. See below. [Colloq. or jargon]
[PJC]
{Expansion curve}, a curve the co["o]rdinates of which show
the relation between the pressure and volume of expanding
gas or vapor; esp. (Steam engine), that part of an
indicator diagram which shows the declining pressure of
the steam as it expands in the cylinder.
{Expansion gear} (Steam Engine). a cut-off gear. See Illust.
of {Link motion}.
{Automatic expansion gear} or {Automatic cut-off}, one that
is regulated by the governor, and varies the supply of
steam to the engine with the demand for power.
{Fixed expansion gear}, or {Fixed cut-off}, one that always
operates at the same fixed point of the stroke.
{Expansion joint}, or {Expansion coupling} (Mech. & Engin.),
a yielding joint or coupling for so uniting parts of a
machine or structure that expansion, as by heat, is
prevented from causing injurious strains; as:
(a) A slide or set of rollers, at the end of bridge truss,
to support it but allow end play.
(b) A telescopic joint in a steam pipe, to permit one part
of the pipe to slide within the other.
(c) A clamp for holding a locomotive frame to the boiler
while allowing lengthwise motion.
(d) a strip of compressible material placed at intervals
between blocks of poured concrete, as in roads or
sidewalks.
{Expansion valve} (Steam Engine), a cut-off valve, to shut
off steam from the cylinder before the end of each stroke.
1. The act of expanding or spreading out; the condition of
being expanded; dilation; enlargement.
2. That which is expanded; expanse; extend surface; as, the
expansion of a sheet or of a lake; the expansion was
formed of metal.
The starred expansion of the skies. --Beattie.
3. Space through which anything is expanded; also, pure
space.
Lost in expansion, void and infinite. --Blackmore.
4. (Economics & Commmerce) an increase in the production of
goods and services over time, and in the volume of
business transactions, generally associated with an
increase in employment and an increase in the money
supply. Opposite of {contraction}.
Syn: economic expansion. [1913 Webster +PJC]
5. (Math.) The developed result of an indicated operation;
as, the expansion of (a + b)^{2} is a^{2} + 2ab + b^{2}.
6. (Steam Engine) 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.
7. (Nav. Arch.) The enlargement of the ship mathematically
from a model or drawing to the full or building size, in
the process of construction. --Ham. Nav. Encyc.
Note: Expansion is also used adjectively, as in expansion
joint, expansion gear, etc.
8. an enlarged or extended version of something, such as a
writing or discourse; as, the journal article is an
expansion of the lecture she gave.
[PJC]
9. an {expansion joint}. See below. [Colloq. or jargon]
[PJC]
{Expansion curve}, a curve the co["o]rdinates of which show
the relation between the pressure and volume of expanding
gas or vapor; esp. (Steam engine), that part of an
indicator diagram which shows the declining pressure of
the steam as it expands in the cylinder.
{Expansion gear} (Steam Engine). a cut-off gear. See Illust.
of {Link motion}.
{Automatic expansion gear} or {Automatic cut-off}, one that
is regulated by the governor, and varies the supply of
steam to the engine with the demand for power.
{Fixed expansion gear}, or {Fixed cut-off}, one that always
operates at the same fixed point of the stroke.
{Expansion joint}, or {Expansion coupling} (Mech. & Engin.),
a yielding joint or coupling for so uniting parts of a
machine or structure that expansion, as by heat, is
prevented from causing injurious strains; as:
(a) A slide or set of rollers, at the end of bridge truss,
to support it but allow end play.
(b) A telescopic joint in a steam pipe, to permit one part
of the pipe to slide within the other.
(c) A clamp for holding a locomotive frame to the boiler
while allowing lengthwise motion.
(d) a strip of compressible material placed at intervals
between blocks of poured concrete, as in roads or
sidewalks.
{Expansion valve} (Steam Engine), a cut-off valve, to shut
off steam from the cylinder before the end of each stroke.
- The rational response to these factors, and to the reversion of Hong Kong to Chinese rule in 1997, would seem to be global expansion.
- But not tolerating such a swing would require a big expansion of Europe's economy, so that exports previously aimed at the U.S. could be redirected within Europe.
- Thrift industry sources speculated that Great Western executives had decided that acquiring Financial Corp. or some of its operations didn't fit Great Western's plans to emphasize expansion outside California, into Florida, Texas and the Northeast.
- Prodded by the parent company to accelerate its growth, the unit aggressively expanded into real estate lending and junk bond financing in the 1980s and hoped the expansion would balance out the company's more cyclical businesses.
- Its IPounds 100m cash hoard makes the company a financially solid business, but the market may get impatient if the continental expansion does not bring the expected rewards in terms of higher earnings.
- The Treasury secretary, whose friend George Bush hopes to ride to the White House this fall on a wave of continued economic expansion, has been vigorously countering these calls for contractionary policies, which imply higher interest rates.
- Other than its expansion into 40 of Sears's California stores, Sears Savings Bank has played a relatively minor role in Sears's diversification into financial services.
- He specifically credits Platt with helping to achieve that rate of expansion, as well as highlighting her contribution to the group's investment business in France and Spain. Platt moved to BZW from Mercury Asset Management.
- St. Mary's, a sprawling 347-bed institution that sits across from an abandoned brass factory that will soon be razed, is just completing a $19 million expansion project.
- The General Agreement on Tariffs and Trade, in its annual review of 108 member countries, said merchandise trade growth slowed to about 3% last year from a 5% increase in 1990, marking the third consecutive year of retarded expansion.
- Suspicious fires destroyed or damaged 32 cars at a parking lot near the New Tokyo International Airport before dawn today, and police blamed radical leftists opposed to the airport's expansion.
- Before the Middle East crisis began, many economists had predicted that the current expansion would break that record.
- Since George Bush and I put our economic policies in place, we've witnessed the longest peacetime expansion in American history, an expansion that has created over 17.5 million jobs.
- Since George Bush and I put our economic policies in place, we've witnessed the longest peacetime expansion in American history, an expansion that has created over 17.5 million jobs.
- Now its ambitious expansion plans are being scaled back.
- TransCanada said it will modify part of the old expansion proposal in its new plan.
- Hamilton was chairman of Reuters from 1979 to 1985 during the British-based agency's expansion of its financial news services.
- The plan has served as the blueprint for the expansion of that city until now.
- As painful as they may be, recessions that are allowed to run their course set the stage for renewed, healthy expansion.
- White House spokesman Marlin Fitzwater said the president used the occasion to thank those lawmakers who had removed a provision from the bill that would have authorized expansion of federal Medicaid payments for abortions.
- Some analysts argue that a higher import bill could benefit Japan by trimming its persistent trade surpluses and cooling industrial expansion.
- Biden's version calls for spending $14.6 billion next year, including 400,000 new beds in treatment centers and immediate treatment for pregnant addicts as well as more FBI and drug enforcement agents and prison expansion.
- "We believed that the NRC resident inspection program has played a significant role in improving industry safety performance and that the expansion of the program is necessary to achieve further improvements," Zech said.
- The Boeing proposal, they said, includes a combination of the 260-seat 767 for domestic and European routes and the 747 for expansion of Delta's routes across the Pacific, which eventually could include a direct Atlanta-Tokyo route.
- However, there is expansion in China and other fast-growing economies. Bank of Tokyo last month received approval from the Vietnamese government to open a representative office in Ho Chi Minh City.
- In addition to global pollution, the finance officials were reviewing such issues as the Third World debt crisis, the political upheaval in Eastern Europe and the efforts needed to keep huge trade imbalances from derailing the global economic expansion.
- A reading above 50 indicates expansion in the manufacturing sector and a reading below 50 indicates a contraction.
- Kloeckner will represent a new trading business area for Viag as growth prospects in traditional industrial sectors are being overshadowed by the strong expansion of the services sector.
- The group wants U.S.-trained Soviet business leaders who can help with the expansion of trade between the Soviet Union and other countries, Amacher said.
- The bank said on the supply side, overall output was expected to be bolstered by further expansion in the manufacturing sector at double-digit rates of 15%.
expansion
expansion (expanded t...
expansion (in series)
expansion admixture
expansion age
expansion agent
expansion alloy
expansion and contrac...
expansion and reconst...
expansion appliance
expansion arc
expansion arc suppres...
expansion arch
expansion bead
expansion bearing
expansion bend
expansion bent
expansion bit
expansion bit drill
expansion block
expansion board
expansion bolt
expansion box
expansion brace
expansion bracket
expansion brake
expansion bus
expansion bushing
expansion business-cycle
expansion cam
expansion cap
expansion capacity
expansion card
expansion cascading
expansion chamber
expansion chamber col...
expansion character
expansion chuck
expansion chucking re...
expansion circuit bre...
expansion clamp
expansion clearance
expansion cloud chamber
expansion cock
expansion coefficient
expansion coil
expansion coil (冷...
expansion compensation
expansion compensator
expansion convention
expansion cooling
expansion cooling dew...
expansion coupling
expansion crack
expansion crosstie
expansion crosstie liner
expansion crown stay ...
expansion curve
expansion cushion
expansion cushions
expansion (expanded t...
expansion (in series)
expansion admixture
expansion age
expansion agent
expansion alloy
expansion and contrac...
expansion and reconst...
expansion appliance
expansion arc
expansion arc suppres...
expansion arch
expansion bead
expansion bearing
expansion bend
expansion bent
expansion bit
expansion bit drill
expansion block
expansion board
expansion bolt
expansion box
expansion brace
expansion bracket
expansion brake
expansion bus
expansion bushing
expansion business-cycle
expansion cam
expansion cap
expansion capacity
expansion card
expansion cascading
expansion chamber
expansion chamber col...
expansion character
expansion chuck
expansion chucking re...
expansion circuit bre...
expansion clamp
expansion clearance
expansion cloud chamber
expansion cock
expansion coefficient
expansion coil
expansion coil (冷...
expansion compensation
expansion compensator
expansion convention
expansion cooling
expansion cooling dew...
expansion coupling
expansion crack
expansion crosstie
expansion crosstie liner
expansion crown stay ...
expansion curve
expansion cushion
expansion cushions
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中国词汇量第二的英语词典
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