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....
空气中悬浮的粒子,由于相互凝聚也会在大小和形状方面发生变化.Airborne particles can also be changed in size and shape by coagulation with each other.进入悬浮的泥沙数量取决于河床上的流体的作用力.The quantity of material that goes into suspension depends on the fluid forces ...