A-weighted sound pressure level A 声级 absolute humidity绝对湿度 absolute roughness 绝对粗糙度 absorbate 吸收质 absorbent 吸收剂 absorbent 吸声材料 absorber 吸收器 absorptance for solar radiation 太阳辐射热吸收系数 absorption equipment 吸收装置 absorption of gas and vapor 气体吸收 absorptiong refrige rationg cycle 吸收式制冷循环 absorption-type refrigerating machine 吸收式制冷机 access door 检查门 acoustic absorptivity吸声系数 actual density真密度 actuating element 执行机构 actuator 执行机构 adaptive control system 自适应控制系统 additional factor for exterior door 外门附加率 additional factor for intermittent heating 间歇附加率 additional factor for wind force 高度附加率 additional heat loss 风力附加率 adiabatic humidification 附加耗热量 adiabatic humidiflcation 绝热加湿 adsorbate 吸附质 adsorbent 吸附剂 adsorber 吸附装置 adsorption equipment 吸附装置 adsorption of gas and vapor 气体吸附 aerodynamic noise 空气动力噪声