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单词 envelope
释义 en·ve·lope AHD[ĕnʹvə-lōp', ŏnʹ-] D.J.[ˈenvəˌləʊp, ˈɒn-]K.K.[ˈɛnvəˌlop, ˈɑn-]n.(名词)
    1. A flat, folded paper container, especially for a letter.信封:扁平,装折叠纸的容器,尤其用来装信
    1. Something that envelops; a wrapping.包裹物;封皮
    1. Biology An enclosing structure or cover, such as a membrane or the outer coat of a virus.【生物学】 膜,包袋:包裹性的结构或包皮,如膜或病毒的外壳
    1. The bag containing the gas in a balloon or an airship.气囊:气球或飞艇上容纳气体的袋装物
    1. The set of limitations within which a technological system, especially an aircraft, can perform safely and effectively.极限数据:技术系统,尤其是飞机,能够安全有效运转的一系列界限
    1. The coma of a comet.彗星的彗发
    1. Mathematics A curve or surface that is tangent to every one of a family of curves or surfaces.【数学】 包络线,包络面:一条曲线或一个曲面,与一组曲线或曲面中的每一曲线或曲面保持正切
Idioms习惯用语push the envelope
  1. To increase the operating capabilities of a technological system.增强技术系统的运转能力
Etymology语源
    1. French enveloppe 法语 enveloppe
    1. from envelopper [to envelop] 源自 envelopper [包住]
    1. from Old French envoloper * see envelop 源自 古法语 envoloper * 参见 envelop
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更新时间:2024/11/30 3:19:41