单词	backing welding
释义	backing welding 打底焊
随便看	physical medium attachment physical medium attachment sublayer physical medium dependent specification physical mediumship physical memory physical memory location physical memory organization physical memory space physical message physical metallurgical physical metallurgy physical meteorology physical method physical metrology physical mineralogy Physical Mix physical mixture physical mode physical model physical modeling physical modelling physical model of bulk-volume rock physical models physical modification physical module 束身就缚束身自修束身自好束身自爱束马县车束马悬车杠条条1 条2 47785 47786 47787 47788 47789 47790 47791 47792 47793 47794