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楼主 |
发表于 2007-8-30 21:14
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找到定义了,看来应该是膨胀曲线的斜率:
By definition, thermal strain at temperature T is the change in length of a member, due to a change in temperature, ( T - Tref ), divided by the original length l of that member. Denoting thermal strain at temperature T as eT
The thermal strain is zero at the reference temperature, Tref .
Also, by definition, the coefficient of thermal expansion (CTE or ) at temperature T is is defined as
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