A compartment in which atmospheric pressure can be gradually raised or lowered, used especially in readjusting divers or underwater workers to normal atmospheric pressure or in treating decompression sickness.减压室，降压室：小隔间，里面的气压可逐渐升高或降低，尤其用于帮助潜水员或水下工作者调整至正常的气压或用于治疗减压病