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feedback    音标拼音: [f'idb,æk]
n. 反馈,回授;回复,反应

反馈,回授;回复,反应

feedback
回馈; 回授 FDBK

feedback
回馈

feedback
n 1: the process in which part of the output of a system is
returned to its input in order to regulate its further
output
2: response to an inquiry or experiment

feedback \feedback\ n.
1. the process in which part of the output of a system is
returned to its input.
[WordNet 1.5]

2. response to an inquiry or experiment.
[WordNet 1.5] feedbag

28 Moby Thesaurus words for "feedback":
birdies, blooping, blurping, closed loop, closed sequence,
current-control circuit, degeneration, distortion,
flip-flop circuit, flutter, fluttering, hissing, howling, hum,
motorboating, positive feedback, process loop, quality loop,
reversed feedback, rumble, scratching, shredding, squeals, static,
whistles, woomping, wow, wowwows

Part of a system output presented at its input.
Feedback may be unintended. When used as a design feature,
the output is usually transformed by passive components which
attenuate it in some manner; the result is then presented at
the system input.

Feedback is positive or negative, depending on the sign with
which a positive change in the original input reappears after
transformation. Negative feedback was invented by Black to
stabilise {vacuum tube} amplifiers. The behaviour becomes
largely a function of the feedback transformation and only
minimally a function of factors such as transistor gain which
are imperfectly known.

Positive feedback can lead to instability; it finds wide
application in the construction of oscillators.

Feedback can be used to control a system, as in {feedback
control}.

(1996-01-02)


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