Using only a camera, a computer and a key-cutting machine, scientists have duplicated sets of keys after taking snaps of them from more than 60 metres away.
只需要一台照相机、一台电脑和一台配钥匙机，科学家们通过在60米开外进行拍照就可以复制一串钥匙。
Then the information can be plugged into a key-cutting machine to produce an exact replica.
然后把这些信息输入到配钥匙机，就可以配出一模一样的钥匙。
The cutting tools, machine tools, machining technology and other aspects involved in the key technology of dry machining and preparatory dry machining are presented in the paper.
对干切削或准干切削的关键技术所涉及的刀具、机床、加工工艺及其它因素等几个方面进行了介绍。
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