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单词 polyphase
释义

Definition of polyphase in English:

polyphase

adjective ˈpɒlɪfeɪzˈpɑliˌfeɪz
  • 1Consisting of or occurring in a number of separate stages.

    a polyphase tectonic interpretation
    Example sentencesExamples
    • New palaeomagnetic data from Lower Carboniferous granitoids of the orogenic root of the eastern Variscan belt show a polyphase palaeomagnetic record.
    • The Arunta Inlier is an extensive east-west-trending, polyphase, high-grade, predominantly Palaeoproterozoic metamorphic complex.
    • Precambrian metamorphism and migmatization and the wide spectrum of mainly Alpine mica ages provide clear evidence for such a polyphase geological history.
    • The Moine rocks widely record polyphase deformation and metamorphism up to amphibolite facies.
    • The polyphase tectonic and sedimentological development of East African continental rift basins is well-illustrated in the Kilombero Rift Valley in Tanzania.
    1. 1.1 (of an electrical device) simultaneously using several alternating currents of the same voltage and frequency but with different phases.
      a polyphase induction motor
      Example sentencesExamples
      • The Energy Policy Act of 1992 required minimum efficiency standards for general purpose, polyphase induction motors.
      • The reduction in the die area dedicated to capacitance opens up the possibility of building more complex RF circuits, such as image-reject mixers and polyphase IF filters.
      • In contrast to direct current (which was difficult to transmit more than ten miles), polyphase AC systems proved capable of transmitting power hundreds of miles.

Derivatives

  • polyphasic

  • adjective
    • Electromyography may show short-duration, small-amplitude, polyphasic motor units with an increased terminal innervation ratio (number of fibers innervated by a single anterior horn cell).
      Example sentencesExamples
      • The blink reflex was characterized by an initial triphasic wave on the ipsilateral stimulus side, followed by a polyphasic wave on both sides.
      • It has been demonstrated that when a dark-adapted leaf is illuminated with high intensity actinic light, the fluorescence transient shows a polyphasic rise, including phases O, J, I, and P.
      • Isolates underwent polyphasic analyses employing phenotypic (selective media and biochemical testing) and genotypic (polymerase chain reaction) assays to determine species identification.
      • But he had no scientific proof that, in situations of sleep deprivation, polyphasic sleep - the term for frequent napping - was more efficient than monophasic (getting sleep all in one chunk).
 
 

Definition of polyphase in US English:

polyphase

adjectiveˈpälēˌfāzˈpɑliˌfeɪz
  • 1Consisting of or occurring in a number of separate stages.

    a polyphase tectonic interpretation
    Example sentencesExamples
    • Precambrian metamorphism and migmatization and the wide spectrum of mainly Alpine mica ages provide clear evidence for such a polyphase geological history.
    • The Arunta Inlier is an extensive east-west-trending, polyphase, high-grade, predominantly Palaeoproterozoic metamorphic complex.
    • The Moine rocks widely record polyphase deformation and metamorphism up to amphibolite facies.
    • The polyphase tectonic and sedimentological development of East African continental rift basins is well-illustrated in the Kilombero Rift Valley in Tanzania.
    • New palaeomagnetic data from Lower Carboniferous granitoids of the orogenic root of the eastern Variscan belt show a polyphase palaeomagnetic record.
    1. 1.1 (of an electrical device or circuit) designed to supply or use simultaneously several alternating currents of the same voltage and frequency but with different phases.
      a polyphase induction motor
      Example sentencesExamples
      • The reduction in the die area dedicated to capacitance opens up the possibility of building more complex RF circuits, such as image-reject mixers and polyphase IF filters.
      • In contrast to direct current (which was difficult to transmit more than ten miles), polyphase AC systems proved capable of transmitting power hundreds of miles.
      • The Energy Policy Act of 1992 required minimum efficiency standards for general purpose, polyphase induction motors.
 
 
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更新时间:2024/12/23 4:33:53