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When people cook,finish the first dish with the food.After then ,With another
tray cover up,due to play the role of temporary insulation.After finished the
second dish and put it into the top plate,Results that in each dish the food
we eat is hot.
SHAN DONG UNVEREITY OF SCIENCEAND TECHNOLOGY
Qingdao, China
Rongyang Qiu,
ShanDong University Of Science And Technology
Junkai Wang,
ShanDong University Of Science And Technology