The total energy,density of states and lattice constant as functions of hydrostatic pressure for cubic zirconia were calculated by a first-principles method.
采用第一性原理计算了立方氧化锆(ZrO2)总的自由能、态密度、晶格常数随不同水静压的变化。
In this paper,the position of force center to a plate in static hydraulics is deduced,the princi- ples of choosing coordinates are given for using simplified formula to define force centerwith a practical ex- ample to reason it.
通过理论分析、推导 ,得出水静力学中平板受力中心的位置 ,给出了运用简化公式求解平板受力中心时选取坐标系的原则。
