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.
摘要：将现代建筑产业与生态环境文明的内涵与特点进行集成，确定研究边界；
Abstract:Through the integrating connotations and characteristics of modern construction industry and ecological environmental civilization, determines the research boundary.
学科的形成在于它成功地界定了自身的研究边界，并规定了本学科研究的学术规范。
The formation of disciplines lies in successfully defining its own research boundaries, and provides the discipline study norms.
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