词汇	d flip-flop
释义	d flip-flop D正反器
随便看	pre-eaneerous lesion pre early nuclear antigen pre-early nuclear antigen pre early nucleo antigen pre-early nucleo antigen pre-Early Paleozoic metamorphic rocks preearly RNA pre-earthly pre-earthquake pre-earthquake dilatancy pre-earthquake distortion pre-earthquake feature pre-earthquake seismic-waves pre-earthquake slip preeast colnmns preeast concrete box girder preeasting field preeast post-tensioned pre-eccentricity preece preece rs formula Preece's formula Preece test Preeceville Preecha