Online Google Dictionary

droop 中文解釋 wordnet sense Collocation Usage Collins Definition
Verb
/dro͞op/,
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drooped, past tense; droops, 3rd person singular present; drooping, present participle; drooped, past participle;
  1. Bend or hang downward limply
    • - a long black cloak drooped from his shoulders
  2. Sag down from or as if from weariness or dejection
    • - his eyelids drooped and he became drowsy
    • - the scenes are so lengthy that the reader's spirits droop
  3. Cause to bend or hang downward
    • - James hid his face in his hands and drooped his head
Noun
  1. An act or instance of drooping; a limp or weary attitude
    • - the exhausted droop of her shoulders
  1. sag: a shape that sags; "there was a sag in the chair seat"
  2. sag: droop, sink, or settle from or as if from pressure or loss of tautness
  3. hang loosely or laxly; "His tongue lolled"
  4. wilt: become limp; "The flowers wilted"
  5. (drooping) weak from exhaustion
  6. (drooping) cernuous: having branches or flower heads that bend downward; "nodding daffodils"; "the pendulous branches of a weeping willow"; "lilacs with drooping panicles of fragrant flowers"
  7. A proportional–integral–derivative controller (PID controller) is a generic control loop feedback mechanism (controller) widely used in industrial control systems – a PID is the most commonly used feedback controller. ...
  8. Droop is the phenomenon that efficiency of a light-emitting diode tends to decrease for increasing current.
  9. (Drooping) Alcohol intoxication (also known as drunkenness or being drunk or inebriated) is a physiological state occurring when an organism has a high level of ethanol in its bloodstream, or when ethanol otherwise causes the physiological effect known as drunkenness. ...
  10. something which is limp or sagging; a condition or posture of drooping; To sink or hang downward; to sag; To slowly become limp; to bend gradually; To lose all enthusiasm or happiness
  11. (drooping) An instance of something drooping; That droops or droop
  12. A sustained deviation between the control point and the setpoint in a two-position control system caused by a change in the heating or cooling load.
  13. A governor/ system characteristic, usually adjustable, which matches the change in load to changes in machine speed/system frequency.
  14. A common occurrence in time-proportional controllers. It refers to the difference in temperature between the set point and where the system temperature actually stabilizes due to the timeproportioning action of the controller.
  15. is used when you are referring to a slope with respect to time. Let's put this in a practice sentence...
  16. The decrease in outlet pressure of a gas pressure regulator which results from an increase in flow rate. Essentially the reverse of lockup (also see "LOCKUP").
  17. Smooth projection of the double seam outside and below the bottom of the normal seam. Usually occurs at the side seam lap area.
  18. A monotonic decrease in passband gain with frequency. If present, it typically is included in the gain or ripple specification. See Gain Error and Passband Ripple.