valve cone grinding machine

例句：

1. 1. This valvecone grinder is used for precision machining of valve cones in oil and gas industry.
   这种阀门圆锥磨床用于石油和天然气工业中对阀门圆锥的精密加工。
2. 2. The valve cone grinder machine is an essential tool for the maintenance of valve cones in the oil and gas industry.
   阀门圆锥磨床是石油和天然气行业维护阀门圆锥的必备工具。
3. 3. The valve cone grinder machine can precisely grind valve cones to meet the requirements of different industries.
   阀门圆锥磨床可以精确地研磨阀门圆锥，以满足不同行业的需要。