plenum system

基本解釋

These provide a plenum for air to circulate below the floor, as part of the air conditioning system, as well as providing space for power cabling .
這些提供了全會(huì)的空氣流通低於樓的一部分，空調(diào)系統(tǒng)，以及提供空間，電力電纜。
After the third plenum of the 11, the government decided to take system reform for the national economy and take "Two-contractor " responsibility for the animal husbandry .
十一屆三中全會(huì)以後國(guó)家決定對(duì)國(guó)民經(jīng)濟(jì)進(jìn)行躰制改革，對(duì)畜牧業(yè)實(shí)行“雙承包”責(zé)任制。

a type of air-conditioning system in which air is passed into a room at a pressure greater than atmospheric pressure