duplex spreadblade cutting method

例句：

1. 1. The newmachine uses a duplex spreadbladecutting method to improve efficiency.
   这台新机器采用了一种双套式展开刀片切割方法来提高效率。
2. 2. The engineer explained the duplex spreadblade cutting method in detail.
   工程师详细解释了双套式展开刀片切割方法。
3. 3. The company has been using this duplex spreadblade cutting method for years, and it has proven to be veryeffective.
   这家公司多年来一直使用这种双套式展开刀片切割方法，并且证明非常有效。