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。
2
The main energysource 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。
3
An energysource in the form of an ultrasonic transducer (6) has as a curved energy transmission surface (7).