先进材料疑固实验室 Heat transfer Laboratory of Advanced Materials Solidification Isotherm(contour line):a type of 渣口中心线 equal temperature at a given date or time on a geographic map. 铁口中心线 300℃ 150 800 500 200 100 Oratory of Advanced Materialss 上降文通大学 SHANGHAI JIAO TONG UNIVERSITYHeat transfer Isotherm (contour line): a type of equal temperature at a given date or time on a geographic map