In the bottom of coal measures is an acidic intrusive body, it is direct heat source of metamorphism, and provided the conversion of lignite to bituminous coal with thermodynamic power.
在本区煤系地层底部有一酸性侵人岩体，该侵入岩体是引起本区煤变质的直接热源，它提供了褐煤向烟煤转化的热动力。
Utilization of geothermal resources to supply electrical and direct heat is energy efficient and competitive with other energy sources both in economics and in environmental efficiency.
地热能的电力利用和直接利用与其它能源相比有着经济与环境上的优势。
Two models of designation for electric heating boiler heat storage system are introduced in domestic hotwater system and especially stresses on the application of direct heat storage system.
文章介绍了电热锅炉蓄热系统在供生活热水系统中的两种设计模式，并着重对直接蓄热式模式进行了阐述。
The purge screw should be in the open position and shielded from direct heat when soldering.
排气螺丝应该位于开启位置，并且在焊接时要有遮盖以免被火源烧到。
The terraces are covered with hanging gardens to protect the structure from direct heat and provide with greens at all levels.
建筑的顶层露台打造成空中花园避免建筑结构受到阳光直射，同时使每一层都充满了绿色植物。
The terraces are covered with hanging gardens to protect the structure from direct heat and provide with greens at all levels.
建筑的顶层露台打造成空中花园避免建筑结构受到阳光直射，同时使每一层都充满了绿色植物。
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