【化】 圆筒式结晶器; 转筒式结晶器

washing machine drum

steam trap【动力】;water knockout drum【油气】;water knockout trap【油气】

rotary haymaker (rotary-drum rake and tedder) haymaking (haying)

cable drum

water drum

dc machine having drum armature, disc armature

grooved drum

hand crab (drum winch)