| 释义 | ball-and-race-type pulverizerball-and-race-type pulverizer[¦bȯl ən ¦rās ‚tīp ′pəl·və‚rīz·ər]  (mechanical engineering) A grinding machine in which balls rotate under an applied force between two races to crush materials, such as coal, to fine consistency. Also known as ball-bearing pulverizer. |