It is an established convention to speak of the fixed stars as a standard unaccelerated reference frame .
把固
的恒星说成是标准的非加速参照系，这是一种已经确立的习惯。
It is an established convention to speak of the fixed stars as a standard unaccelerated reference frame .
把固的恒星说成是标准的非加速参照系，这是一种已经确立的习惯。
The two dimensional pseudohomogeneous model was often used for the non isothermal, non adiabatic fixed bed reactor that was widely used for the strongly exothermic reactions.
非恒温非绝热固
广
于强放热的体系。
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