- frequency change
- 频率变换
English-Chinese electricity dictionary (电气专业词典). 2013.
frequency change
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Frequency-change signaling — In telecommunication, frequency change signaling is a telegraph signaling method in which one or more particular frequencies correspond to each desired signaling condition of a telegraph code. The transition from one set of frequencies to the… … Wikipedia
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Frequency-exchange signaling — is frequency change signaling in which the change from one significant condition to another is accompanied by decay in amplitude of one or more frequencies and by buildup in amplitude of one or more other frequencies.Frequency exchange signaling… … Wikipedia
Frequency shift — In the physical sciences and in telecommunication, the term frequency shift has the following meanings: * Any change in frequency * A Doppler shift * Any change in the frequency of a radio transmitter or oscillator. (Note: In the radio regime,… … Wikipedia
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Frequency domain sensor — Frequency domain (FD) sensor is an instrument developed for measuring soil moisture content. The instrument has an oscillating circuit, the sensing part of the sensor is embedded in the soil, and the operating frequency will depend on the value… … Wikipedia
Frequency-dependent selection — is the term given to an evolutionary process where the fitness of a phenotype is dependent on its frequency relative to other phenotypes in a given population. In positive frequency dependent selection (or purifying frequency dependent selection) … Wikipedia
Frequency and pragmatically unmarked word order — “Frequency and pragmatically unmarked word order” is a paper by Matthew Dryer, published in 1995 within the compilation Word Order in Discourse , analyzing various definitions of markedness as it might apply to word order. It advanced a… … Wikipedia
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Frequency — For other uses, see Frequency (disambiguation). Three cyclically flashing lights, from lowest frequency (top) to highest frequency (bottom). f is the frequency in hertz (Hz), meaning the number of cycles per second. T is the period in seconds (s) … Wikipedia
Change blindness — In visual perception, change blindness is a normal phenomenon of the brain which show in light that the brain does not have a precise representation of the world but a lacunar one, made of partial details. Despite the name, this phenomenon does… … Wikipedia
