| agitation |
Anxiety accompanied by restlessness and resulting in increased psychomotor activity with disruptive physical and/or vocal behavior.
출처: coa.kumc.edu/GEC/modules/BehavDisorder/BD-Glossary...
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| aging |
the slow change of oscillator frequency with time, if all other influences are held constant. The primary causes are mass transfer and stress relaxation mechanisms in the crystal unit. These can be reduced by maximizing the ratio of quartz resonator mass to contamination mass by increasing the number of the overtone, and by careful design and processing of the resonator. In a good oscillator the aging rate will tend to decrease with time. ...
출처: www.valpeyfisher.com/glossary.asp
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