operation range

• 工作间隔

operation range的用法和样例：

例句

1. The extended working range can be operated at intervals.
   扩展的工作范围以间隔形式工作。
2. But the size of VSD is smaller and the time for operation and hospitalization is shorter in the group of transcatheter occlusion.
   封堵术组的室间隔缺损较手术组的小，但手术及住院时间较短。