速度范围改变 variation of speed ranges n. 立式镗铣床 vertical a. vertical boring and turning mill n. 立式回转工作台铣床 vertical spindle rotary-table miller n. 立式转塔车床，立式六角车床 vertical turret lathe n. 立式铣床 vertical-spindle milling machine n. 振动极限，振动界限 vibration mark n. 陶土烧结磨轮 vitrified bonded grinding wheel n.