What are the construction test data of ventilation and air conditioning projects? Water supply system equipment, hot water system equipment, mechanical drainage system equipment, fire protection system equipment, heating system equipment, water treatment system equipment,And all kinds of water pumps, fans, chillers, cooling towers, air conditioning units, fresh air units and other equipment for ventilation and air conditioning systems after installation,Stand-alone trial operation should be carried out,And make records.The heating system, water treatment system, ventilation system, refrigeration system, purification air conditioning system, etc. should be tested and debugged,And make records.Non-pressure pipe systems and equipment,Including open water tanks, sanitary ware, rainwater pipes installed indoors, etc,After the system and equipment are installed,As well as the indoor and outdoor drainage pipes that are concealed, buried and have insulation layers,Irrigation (full) wate
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What are the nano materials? Nano-materials can be roughly divided into four categories: Nano-powder, nano-fiber, nano-film and nano-block.Among them, nano-powder has the longest development time and the most mature technology,Is the basis for the production of other three types of products.Nano-ceramic materials developed by nano-technology are modified by nano-powders,By adding or generating nano-scale particles, transistors, wafer fibers, etc. to the ceramics,So that the grain, grain boundaries and the combination between them reach the nano-level,The strength, toughness and super-plasticity of the material are greatly improved.It overcomes many shortcomings of engineering ceramics,And have an important impact on the mechanical, electrical, thermal, magnetic and optical properties of the material,In order to replace the application of engineering ceramics has opened up a new field.With the wide application of nanotechnology,Nano-ceramic,The fragility of ceramic materials,Make the ceramic like