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slowstar

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slowstar

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katley(½ð±Ò+2, ·­ÒëEPI+1):лл 2010-04-08 16:24
ÒýÓûØÌû:
Originally posted by slowstar at 2010-04-08 15:59:26:
activated energy

±§Ç¸Ó¦¸ÃÊÇActivation energy (»î»¯ÄÜ)
Activation state (»î»¯×´Ì¬)
Thermal activation (ÈȻ)
D  D0e
−Ea,d/RT (10.4-5)
where R is the ideal gas constant and T is the absolute temperature. The quantity D0
is a parameter that is nearly temperature-independent, and Ea,d is called the molar activation energy for diffusion. Liquid viscosities are usually well described by the formula
¦Ç  ¦Ç0eEa,¦Ç/RT (10.4-6)
where Ea,¦Ç is the molar activation energy for viscous flow
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5Â¥2010-04-08 16:22:39
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