片语
visual measurement[测] 目测
visual l idle indication lamp空线信号灯
Visual and audible leak indication显示和声音泄漏指示
visual inspection[测] 目测;目检;外观检验
indication visual可见信号
audible and visual indication声光指示
visual idle indication lamp空线信号灯
Visual indication of selection选择的视觉提示
visual glide path indication system下滑道目视指示系统