特殊用法beam widening1.波束展宽capital widening1.资本扩大gauge widening1.轨距加宽pulse widening1.脉冲展宽shaft widening1.井筒刷大widening of [on] curve1.曲线[弯道]轨距加宽widening of meaning1.词义扩大, 引伸widening of roadbed1.道床加宽widening of subgrade1.路基加宽widening of track1.轨道加宽