Stage lighting is also called the "lighting", referred to as "light". One of the other methods of stage art. The stage lighting equipment and technical means, with the development of the story, the display environment, rendering the atmosphere, highlight the central figures in color and its change, ｃｒｅａｔｅ a stage the sense of space, time, shaping stage external image, and provide the necessary lighting effects.

Water treatment works is not to meet the requirements of water purification, softening, disinfection, removal of iron and manganese. To heavy metal ions, filtering of a project. Simply speaking, "water treatment engineering" is through physical, chemical means, without the need to remove some of the production, living matter to do a project. In order to apply to specific purposes and for water sedimentation, filtration, coagulation, flocculation, and a project water corrosion, scale and other conditioning.

Medical equipment is an important symbol of modernization, medical, scientific research, teaching and research, is the most basic elements of the teaching work, and continuously improve the level of medical science and technology basic condition. The development of clinical disciplines largely depends on the instrument, even plays a decisive role.