ceilings锅炉炉顶
ceilingn.天花板;上限
Ceiling and Visibility OK云幕与能见度良好
ceiling priority protocol天花板优先级协议
ceiling mounted air outlet顶棚送风口
ceiling altitude tolerance升限耐力
ceiling sound transmission吊顶传声
ceiling-mounted detector顶棚火灾探测器
ceiling-height indicator云幂高度指示器
ceiling voltage of exciter励磁机的巅值电压