1. A square bar used as a support for a topmast. 
   桅栓方木条，用来支撑中桅
2. A tall framework over a drilled hole, especially an oil well, used to support boring equipment or hoist and lower lengths of pipe. 
   钻架竖在钻井（尤指油井）之上的支架，用来支撑钻孔设备或提升和下放钻管
3. A bar with a conical point used to support work, as during turning on a lathe. 
   中心杆带锥形顶尖的用来支撑加工件的条杆，如开动镟床时所用
4. A horizontal beam or bar held up by two pairs of divergent legs and used as a support. 
   支架一根水平的起支撑作用的梁子或木棍，用两对叉开的支脚支撑
5. in gymnastics: raise oneself while hanging from one's hands until one's chin is level with the support bar. 
   属于体育；依靠胳膊升高自己直到他的下巴超过支持杠杆的高度。

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• 1. 镗杆支架
  boring bar bearing镗杆轴承...boring bar support镗杆支架...boring bit镗孔钻头, 勘探钻头
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