工艺文件英文

我给你吧 上维基百科啊 Central air conditioningCentral air conditioning, commonly referred to as central air (U.S.) or air-con (UK), is an air conditioning system which uses ducts to distribute cooled and/or dehumidified air to more than one room, or uses pipes to distribute chilled water to heat exchangers in more than one room, and which is not plugged into a standard electrical outlet.With a typical split system, the condenser and compressor are located in an outdoor unit; the evaporator is mounted in the air handler unit. With a package system, all components are located in a single outdoor unit that may be located on the ground or roof.Central air conditioning performs like a regular air conditioner but has several added benefits:When the air handling unit turns on, room air is drawn in from various parts of the building through return-air ducts. This air is pulled through a filter where airborne particles such as dust and lint are removed. Sophisticated filters may remove microscopic pollutants as well. The filtered air is routed to air supply ductwork that carries it back to rooms. Whenever the air conditioner is running, this cycle repeats continually. Because the central air conditioning unit is located outside the home, it offers a lower level of indoor noise than a free-standing air conditioning unit. 网站我发布出来 从来 维基百科的网站在百度知道里都发不出来，太小气了，我消息发给你