The base of the rack is parallel to the end rail (the short end of the pool table) and positioned so the apex ball of the rack is located on the foot spot.
架的基础与结束栏杆（池桌子的短结束） 平行而且放置，如此架的顶球位于脚地点之上。
Base cabinets can house multiple CPUs, rack electronics, wire management, and storage.
底柜能容纳多个CPU，机架电子，电线管理和存储器。
The new unit is mainly made up of adjusting base, leading screw, diagonal rack and special spanner.
该装置主要由调整座、丝杠、斜齿条和专用扳手组成。
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