air hold down的意思|示意

Customers can special order or design to achieve the none-shift speed, add air hold down arm, hydraulic mandrel expansion... etc.

可依客户特殊要求特别设计：达到无段变速、加装压料手臂装置、油压扩张装置…等。

Hold the air mouse horizontally with its front side up and back side down.

需要正面朝上，背面朝下，水平握住空中鼠标。

During the trip down, we got a reminder that the mountains hold risks beyond thin air.

在下降过称中，我们获得一个提示，登山的风险远不止于稀薄的空气。

Finally one day, the air enough to hold, and we all have drop-down.

终于有一天，空中装不下了，我们都纷纷落了下来。

We've got water on the ground and in the air. And when the air can't hold any more moisture because it's totally saturated or it cools down, you get condensation.

我们的地表和空气中都有水汽存在，而当空气中水汽饱和或是受冷，使得空气无法承受其重量，水汽就会液化成水珠。