The conditions which have an important influence on metal cutting are work material, cutting tool material, cutting tool geometry, cutting speed, feed rate, depth of cut and cutting fluid used.

对金属切削有重要影响的条件有工件材料、刀具材料、刀具几何形状、切削速度、进给率、切削深度和所用的切削液。

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The physical and cutting performance of PCBN tool material and the features of them used in different cutting fields are introduced. The key technology is also discussed.

阐述了PCBN刀具材料的物理性能和切削性能，及其在不同切削领域应用的特点，并对关键技术进行了探讨。

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The cutting tool material is best used hard alloy.

刀具材料最好采用硬质合金。

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Boies argues that Napster technology is essentially like a VCR or photocopy machine -- a tool that may be used to pirate copyrighted material but is not inherently illegal.

CNN: The next piracy panic: Software