“加宽的”的英语？

本文简明地描述了由载流子带内弛豫加宽的半经典的密度矩阵理论.The semiclassical density - matrix theory with carrier intraband relaxation broading is des - cribed.宽度加宽的消息被广播到国外.The news about the broadened breadth is broadcast abroad.现在的桥是在19世纪20年代加宽的....