1. A horizontal or transverse beam, especially a structural member resting on two supports. 
   横梁，顶梁水平的或横向的梁，尤指架在两个支柱上的建筑构件
2. a horizontal beam used to prevent two other structural members from spreading apart or separating. 
   防止两个建筑组件分开或合在一起的水平横梁。
3. atomic beam and molecular beam 
   原子束和分子束
4. A floor or roof beam placed between two long beams that supports the ends of the tailpieces. 
   顶梁，楣放大两根长梁之间用来支撑半端梁尾部的一块地板或尾梁
5. 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

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• 1. 双束
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