英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

compression    音标拼音: [kəmpr'ɛʃən]
n. 压缩,压榨,缩小
n. 压缩

压缩,压榨,缩小压缩

compression
压缩


compression
压缩

compression
压缩

compression
n 1: an increase in the density of something [synonym: {compaction},
{compression}, {concretion}, {densification}]
2: the process or result of becoming smaller or pressed
together; "the contraction of a gas on cooling" [synonym:
{compression}, {condensation}, {contraction}]
3: encoding information while reducing the bandwidth or bits
required [ant: {decompression}]
4: applying pressure [synonym: {compression}, {compressing}] [ant:
{decompressing}, {decompression}]

Compression \Com*pres"sion\, n. [L. compressio: cf. F.
compression.]
1. The act of compressing, or state of being compressed.
"Compression of thought." --Johnson.
[1913 Webster]

2. (Computers) reduction of the space required for storage
(of binary data) by an algorithm which converts the data
to a smaller number of bits while preserving the
information content. The act of compressing [3].

Note: Compression may be {lossless compression}, in which all
of the information in the original data is preserved,
and the original data may be recovered in form
identical to its original form; or {lossy compression},
in which some of the information in the original data
is lost, and decompression results in a data form
slightly different from the original. {Lossy
compression} is used, for example, to compress audio or
video recordings, and sometimes images, where the
slight differences in the original data and the data
recovered after {lossy compression} may be
imperceptable to the human eye or ear. The {JPEG}
format is produced by a {lossy compression} algorithm.
[PJC]

74 Moby Thesaurus words for "compression":
abbreviation, abridgment, abstract, agglutination, apocope,
astriction, astringency, bottleneck, cervix, circumscription,
clamping, clamping down, clumping, clustering, coarctation,
compactedness, compaction, compressure, concentration, concretion,
condensation, consolidation, conspectus, constriction,
constringency, contraction, contracture, crush, curtailment,
decrease, densification, diminuendo, elision, ellipsis, epitome,
foreshortening, hardening, hourglass, hourglass figure, isthmus,
knitting, narrow place, narrowing, neck, nip, pinch, precis, press,
pressure, puckering, pursing, recap, recapitulation, reduction,
retrenchment, shortening, solidification, squeeze, squeezing,
stranglement, strangulation, striction, stricture, summary,
summation, syncope, synopsis, systole, telescoping, tightening,
truncation, tweak, wasp waist, wrinkling

1. (Or "compaction") The coding of data to save
storage space or transmission time. Although data is already
coded in digital form for computer processing, it can often be
coded more efficiently (using fewer bits). For example,
{run-length encoding} replaces strings of repeated characters
(or other units of data) with a single character and a count.
There are many compression {algorithms} and utilities.
Compressed data must be decompressed before it can be used.

The standard {Unix} compression utilty is called {compress}
though {GNU}'s superior {gzip} has largely replaced it. Other
compression utilties include {pack}, {zip} and {PKZIP}.

When compressing several similar files, it is usually better
to join the files together into an {archive} of some kind
(using {tar} for example) and then compress them, rather than
to join together individually compressed files. This is
because some common compression {algorithms} build up tables
based on the data from their current input which they have
already compressed. They then use this table to compress
subsequent data more efficiently.

See also {TIFF}, {JPEG}, {MPEG}, {Lempel-Ziv Welch},
"{lossy}", "{lossless}".

{Compression FAQ
(ftp://rtfm.mit.edu/pub/usenet/news.answers/compression-faq/)}.

{Web Content Compression FAQ
(http://perl.apache.org/docs/tutorials/client/compression/compression.html)}.

{Usenet} newsgroups: {news:comp.compression},
{news:comp.compression.research}.

2. Reducing the dynamic range of an audio signal,
making quiet sounds louder and loud sounds quieter. Thus,
when discussing digital audio, the preferred term for reducing
the total amount of data is "compaction". Some advocate this
term in all contexts.

(2004-04-26)


请选择你想看的字典辞典：
单词字典翻译
Compression查看　Compression　在百度字典中的解释百度英翻中〔查看〕
Compression查看　Compression　在Google字典中的解释Google英翻中〔查看〕
Compression查看　Compression　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Clinical trials - World Health Organization (WHO)
    The ICTRP is a global initiative that aims to make information about all clinical trials involving humans publicly available It also aims to: improve the comprehensiveness, completeness and accuracy of registered clinical trial data; communicate and raise awareness of the need to register clinical trials; ensure the accessibility of registered
  • International Clinical Trials Registry Platform (ICTRP)
    For the purposes of registration, a clinical trial is any research study that prospectively assigns human participants or groups of humans to one or more health-related interventions to evaluate the effects on health outcomes Clinical trials may also be referred to as interventional trials
  • Glossary - World Health Organization (WHO)
    Biomedical clinical trials of experimental drug, treatment, device or behavioral intervention may proceed through four phases: Clinical trials test a new biomedical intervention in a small group of people (e g , 20-80) for the first time to evaluate safety (e g , to determine a safe dosage range and to identify side effects)
  • Guidance for best practices for clinical trials
    The Guidance for Best Practices for Clinical Trials has been developed in response to the 2022 World Health Assembly resolution (WHA75 8) on strengthening clinical trials This guidance provides Member States with a framework for integrating robust and ethical clinical trial practices into their national health systems, enhancing the quality
  • WHO Global Clinical Trials Forum (GCTF) - World Health Organization (WHO)
    The network aims to enable activities of partners for implementation of WHO's guidance on best practices for clinical trials, guidance developed at the request of World Health Assembly resolution WHA 75 8 A Global Action Plan for Clinical Trial Ecosystem Strengthening re-articulates the WHO guidance in the form of key actions for implementation
  • Guidance for best practices for clinical trials
    In response to the World Health Assembly resolution (WHA75 8) on Strengthening clinical trials to provide high-quality evidence on health interventions and to improve research quality and coordination, the guidance emphasizes the importance of patient, participant, and community engagement in clinical trials to ensure research aligns with public needs and maintains trust Key recommendations
  • Chinese Clinical Trial Registry (ChiCTR) - World Health Organization (WHO)
    10 Is the WHO Trial Registration Data Set electronically searchable? (ICMJE) Yes 11 Is the WHO Trial Registration Data Set available in English? Yes 12 Can registrants submit a trial for registration at any time of day on any day of the week (24 hours a day, seven days a week)? Yes 13
  • Public consultation on WHO guidance for best practices for clinical trials
    Important stakeholder groups for this technical guidance include, (but are not restricted to): public sector researchers, private sector entities engaged in clinical trials, national health authorities or research councils involved in health research, clinical trial registries, research ethics bodies, national or transnational medicinal product
  • WHO launches new clinical trials guidance – What do I need to know?
    The publication of the "WHO guidance for best practices for clinical trials" in September 2024 was a major milestone For the first time there is now global guidance applicable to design and conduct of all clinical trials (whether or not they include investigational products), also with relevance to observational studies Key areas of focus include embedding research into health systems





中文字典-英文字典  2005-2009