If it's sitting on a vertical branch, it'll groom its breast feathers.
如果它坐在垂直的树枝上，它会梳理胸脯的羽毛。
This paper made a study on the excited property of the S-wave (transverse wave) from the expression of the vertical branch cut intergration of the S-wave.
从S波(横波)垂直割线积分的表达式出发，对S波的激发特性进行了研究。
The chilled air enters the top of a rack through two vertical standpipes, which branch off into air wands -long, thin pipes lined with vents that release cold air.
这些冷却空气通过两根垂直管道进入到机柜的顶部，然后在分流进入那些空气杆，这些空气杆是有序的排列着冷气释放口的长长的薄薄的管道。
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