The temperature of tunnel wall, coefficient of unsteady heat exchange and thickness of heat-adjusting layer at constant air temperature in a tunnel are calculated.
求算了巷道风温恒定时岩体壁面温度、岩体与空气的非稳态热交换系数和围岩调热圈厚度。
The results show that the thickness and composition of the alloyed layer is related to an alloying temperature and time on the condition of a constant pressure and fixed cathode.
结果表明，在极间距与工作气压一定的条件下，渗层厚度及成分与温度和保温时间有关。
Dynamic matrix control system of outlet temperature in constant pressure heating furnace is designed with 2-layer structure.
采用双层控制结构，设计了常压加热炉出口温度的动态矩阵控制系统。
It consists of outer layer sealing constant temperature jacket, middle layer objective sleeve and inner layer as lens frame to partition and fix optical lens elements.
它由外层密封恒温外套、中间层镜筒、内层为分隔固定光学透镜元件的透镜框组件组成。
It consists of outer layer sealing constant temperature jacket, middle layer objective sleeve and inner layer as lens frame to partition and fix optical lens elements.
它由外层密封恒温外套、中间层镜筒、内层为分隔固定光学透镜元件的透镜框组件组成。
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