adj.光滑的,流畅的,柔软的,温和的,安详的
vt.使平滑,排除,消除,安抚,平息,使优雅
vi.变平和,变缓和
n.平地,平面
Nearly all line infantry carry smoothbore, muzzle - loading muskets.
几乎所有的战列步兵都使用前装滑膛枪.
Reasonable design, big flow zone , smoothbore, no heap of dirty, small flow resistance.
设计合理, 流通面积大, 通径平滑过渡,无脏物堆积现象, 流通阻力小.