| 释义 |
hys·ter·e·sis
\ˌhistəˈrēsə̇s\ noun
(plural hystere·ses \-ēˌsēz\)
Etymology: New Latin, from Greek hysterēsis shortcoming, deficiency, need, from hysterein to come late, be behind (from hysteros later) + -sis — more at out
1.
a. : the lagging of a physical effect on a body behind its cause (as behind changed forces and conditions)
< there is a good deal of hysteresis, that is, a time lag between the cooling and the setting to be expected of the jelly — J.W.McBain >
< all manometers must be tested for hysteresis as well as for sensitivity and natural frequency — H.D.Green >
b. : a lagging of elongation behind tensile stress and of contraction behind release from stress in an elastic solid due to internal friction
c. : a lagging of magnetization and hence of magnetic induction behind magnetic intensity and of demagnetization behind reduction of intensity in a ferromagnetic substance (as iron)
d. : a lagging of electric polarization behind electric intensity and of depolarization behind reduction of intensity in a dielectric
2.
a. : the influence of the previous history or treatment of a body on its subsequent response to a given force or changed condition
< the influence of the previous treatment of a gel upon its behavior is known as hysteresis — B.S.Meyer & D.B.Anderson >
< a study has been made of the phenomenon of rennet hysteresis, in which the time of coagulation of heated milk is progressively greater with increase in the time interval between heating and addition of rennet — J.S.Fruton >
b. : the changed response of a body that results from this influence
< the permeability depends on the past history (magnetically speaking) of the iron, a phenomenon known as hysteresis — F.W.Sears >
3. : hysteresis loss |