短語詞組短語beam -end stiffenered connection 梁端加強式節(jié)點beam withoverhanging end 有懸臂端的梁H beam and end plate H 型鋼flat beam column end joints 扁梁節(jié)點the beam -end x 梁端xlaser beam modulation end reflector 激光諧振腔端面反射體 返回 beam end