斯蒂芬问题是研究边界变化时导热规律的的物理方程的自由边界条件。
Stefan problem is free boundary condition of physical equation in thermal transfer when the boundary change.
这种模拟方法的主要优点是自由边界条件实现比较方便，数值频散小，模拟精度高。
This method has advantages of small numerical dispersion, high simulation precision, and easy imposition of free boundary conditions.
编制了氯化钠型结构各种晶体的晶格振动通用程序；它适用于循环或自由边界条件。
The common program, which can calculate the lattice vibration for various crystals with NaCl structure type, has been made and it is applicable to cyclic or free boundary condition.
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