丹尼：通过将切割刀具移近旋转的工件。
Danny: By moving a cutting tool against a rotating workpiece.
介绍了超声切割刀具的真空钎焊技术，主要内容包括钎焊材料、钎焊方法和钎焊工艺。
Vacuum brazing technology of a type of ultrasonic cutting tool is introduced in this paper. The main contents are composed of brazing filler metal. brazing method and brazing procedure.
金属切割的物理学提供了理论框架，我们必须借助于这个框架检查切割刀具设计的其他所有要素。
Physics of metal-cutting provide the theoretical framework by which we must examine all other elements of cutting tool design.
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