Laser as a heating source of high energy density of accurate control, can carry out multiple-sort strengthening treatment to the metal surface.
激光作为一种精密可控的高能量密度的热源，可对金属表面进行多种强化处理。
The main energy source of greenhouse is solar radiation. Defining optimum lighting surface of the greenhouse is the key of greenhouse structural design of greenhouse.
温室的主要能量来源是太阳辐射，确定出最佳的温室前屋面以获得更多的太阳辐射是温室结构设计的关键。
An energy source in the form of an ultrasonic transducer (6) has as a curved energy transmission surface (7).
超声换能器(6)形式的能量源具有弯曲的能量传递表面(7)。
Surface water heat pumps (SWHPs) are energy-efficient devices for heating and cooling that use surface water as a heat source and sink.
水源热泵是一种利用地下浅层水资源(地表水或地下水)，既可供暖又可制冷的高效节能热泵系统。
With the help of one project case, studies show that the post positional assisted heat source surface water heat pump system is superior in the operation cost and energy saving.
推导出了两种形式下热泵系统单位小时运行费用，结合某实例说明采用后置式辅助热源的地表水源热泵系统运行费用小，具有节能的优越性。
With the help of one project case, studies show that the post positional assisted heat source surface water heat pump system is superior in the operation cost and energy saving.
推导出了两种形式下热泵系统单位小时运行费用，结合某实例说明采用后置式辅助热源的地表水源热泵系统运行费用小，具有节能的优越性。
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