oblique hobbing

例句：

1. 1. The engineer used a special tool to perform an oblique hobbing operation on the metal.
   工程师使用一种特殊的工具对金属进行斜向钻孔操作。
2. 2. During construction, it's common to perform oblique hobbing to make holes in concrete.
   在建筑施工中，斜向钻孔是常见的做法，用于在混凝土中打孔。
3. 3. The oblique hobbing technique is crucial for drilling through hard materials like stone.
   斜向钻孔技术对于钻透像石头这样的硬材料至关重要。