一维非稳态通用导热的特别难的问题，如有雷同，纯属巧合-Generic one-dimensional unsteady heat conduction particularly difficult problem, any similarity is purely coincidental

H型坯 一维非稳态有效导热模型 切片模型 连铸过程 异形坯 传热凝固-H parison effective one-dimensional unsteady heat conduction model slicing model beam blank continuous casting process Solidification