holding-down device的意思|示意

Here's a quick hint to help you get around on such a tiny device: holding down Alt + left mouse button will allow you to drag screens around on your desktop, even if you can't see the title bar.

下面是可以帮助您在这样小的设备上进行操作的一个快速提示：即使看不到标题条，按下alt +鼠标左键也可以让您在桌面上拖动屏幕。

The reasons and countermeasures for mother liquor holding tank wall thinning down of high density polyethylene device were analyzed in this paper.

本文从大庆石化公司高密度聚乙烯装置的生产实践出发，对造成母液储罐罐壁减薄的原因进行了分析，并提出了相应的对策。