loosenvt.松开;放松;放宽vi.变松;松弛
loosening body松散体
loosening belt松弛带
loosen machine疏松机
loosen a screw松开螺丝
loosening agent疏松剂
loosen blasting松动爆破
loosening wedge拆卸楔
loosen the soil疏松土壤
loosened carbon松的炭渣
loosen soil bed松散层