上部和下部温控器必须调节在相同的温度。
Upper and lower thermostats must be adjusted to the same temperature.
结果表明，输油管与伴热管上部加保温板有助于保持输油管的温度。
The results show that the insulation board is benefit to maintain the temperature of pipelines.
混凝土和钢筋上部结构正垂直温度梯度。
Positive vertical temperature gradient in concrete and steel superstructures.
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