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。
Other uses for this high power diode laser bar are as a direct source for various materials processing applications including cladding, welding, heat treating and brazing.
该高能半导体激光器的其他用途包括，用作各种材料处理应用的激光光源，这些处理应用包括覆层、焊接、热处理和铜焊接。
The machining center location should be away from the source, should avoid direct sunlight and heat radiation, avoid the influence of moisture and air.
加工中心的位置应远离振源、应避免阳光直接照射和热辐射的影响，避免潮湿和气流的影响。
The machining center location should be away from the source, should avoid direct sunlight and heat radiation, avoid the influence of moisture and air.
加工中心的位置应远离振源、应避免阳光直接照射和热辐射的影响，避免潮湿和气流的影响。
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