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The surface temperature of the ceiling is more than that of the floor.
天棚表面温度略大于地板表面温度；
youdao
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How to keep constant temperature in production floor during winter time?
在冬季，车间里是如何做到温度的恒温的？
youdao
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How to keep constant temperature in production floor during winter time?
在冬季，车间里是如何做到温度的恒温的？
youdao