资料来源 : pyDict
放射率
资料来源 : Webster's Revised Unabridged Dictionary (1913)
Emissivity \Em`is*siv"i*ty\, n.
Tendency to emission; comparative facility of emission, or
rate at which emission takes place; specif. (Physics), the
rate of emission of heat from a bounding surface per degree
of temperature difference between the surface and surrounding
substances (called by Fourier {external conductivity}).
Emissivity \Em`is*siv"i*ty\, n.
Tendency to emission; comparative facility of emission, or
rate at which emission takes place, as of heat from the
surface of a heated body.