absolute constants 中文意思是什麼
absolute constants
解釋
通用常數-
The elastic constants of bcc li, na and fcc al crystals have been evaluated as functions of pressure and temperature by using a new model together with ab initio electronic structure and total - energy calculations. in the model it is considered that the elastic constants of crystals at a given temperature and pressure can be calculated using a conventional density functional method but modified by a new set lattice constants due to the isobaric volumetric thermal expansion when temperature rise from absolute zero to the given one
本文對高壓及有限溫度立方金屬彈性常數的計算方法進行了研究，建立了一種考慮溫度效應的物理模型，基於這個模型和從頭算方法，對典型的立方晶系金屬li 、 na 、 al在高壓及有限溫度（熔點以下溫度）彈性常數進行了計算，取得了與已有實驗結果較好相符的計算結果。 -
Methods are available for the measurement of absolute velocity constants but they are by no means easy to apply.
雖然某些方法對測定絕對速度常數是合用的，但不容易實施。
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