阿管筒，以便提供'酒吧垂直调整的“T。”
A Tube Collet is provided to allow vertical adjustment of the 't' bar.
垂直调整通过指示杠杆适应上升限度，因而不需要任何目视调整。
Vertical adjustment is accomplished using a lever with indications for matching the ceiling height, so there is no visual alignment required.
这大致按预期的那样工作：调整垂直滑块改变了水平滑块的范围。
This works about as expected: Adjusting the vertical slider changes the range of the horizontal slider.
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