Here, extreme temperatures and pressures force lava up through the layers of the Earth in tubes criss-crossing the mantle like a sort of chaotic plumbing for lava.
在地幔的高温和强压作用下，火山岩有如涌入杂乱无序的管道，阡陌纵横于地幔，向上渗入地球各圈层。
The key lies in producing enough great driving force of natural circulation at reasonable heating temperature difference to make masted tape self-rotate reliably in heat transfer tubes.
其关键是能否在合理的加热温差下产生足够大的自然循环推动力，足以带动自动清洗螺旋扭带可靠地自转。
This paper analyzed the energy consumption of a system in operation status——the double U-tubes vertically buried tube ground-source heat pump system in an air force station of Chongqing.
基于重庆市某空军场站的双U管竖埋式土壤源热泵系统工程，对该系统冬季变工况下的运行能耗进行了分析。
This paper gives the flow simulation of hydraulic turbine draft tubes. Then, the calculation formula of the frequency and force of vibration of the draft tube are derived.
本文通过尾水管内流动的模拟，导出了由尾水涡带所引起的周期性振动的振动频率和脉动压力的计算公式。
The key lies in producing enough great driving force of natural circulation at reasonable heating temperature difference to make twisted tape self-rotate reliably in heat transfer tubes.
自然循环自动清洗式蒸发器是解决蒸发器结垢问题的理想方案，其关键是能否在合理的加热温差下产生足够大的自然循环推动力，足以带动自动清洗螺旋扭带可靠地自转。
In this paper, the mechanism of producing grip - force between the press - connect - tubes in the over - head line has been analyzed based on the metal press-distortion theory.
本文以金属压缩变形理论为基础分析了架空导地线压接管压后产生握着力的机理。
In this paper, the mechanism of producing grip - force between the press - connect - tubes in the over - head line has been analyzed based on the metal press-distortion theory.
本文以金属压缩变形理论为基础分析了架空导地线压接管压后产生握着力的机理。
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