升降装置 lifting gear ; lifting device ; hoisting gear ; jacking gear ; lifting motion

人工降雨装置 rainer ; rain gun ; rain making machine ; artificial rainfall equipment

脑降温装置 brain cooling system ; brin cooling syst

降落装置 lowering device ; Free fall system ; landing-gear ; Launching appliance

横导轨升降装置 cross rail elevating device ; cro rail elevating device

降压装置 dropping equipment

飞刀辊升降装置 roll lowerator

纸卷降落装置 roll lowerator

伸缩式液压升降装置 telescopic jack

下降位置 lowering position