这里介绍了立方氮化硼刀具的特点和用于镗削阀体的成功方法，并列出了实际加工的工艺参数。
This passage has introduced the features of cubic boron nitrite as well as the successful methods for boring valve body, moreover, has listed the technological parameters in practical processing.
主要介绍了PCBN（聚晶立方氮化硼）刀具的基本特性及其应用技术。
This paper focuses mainly on the characteristics and its application of PCBN (Polycrystalline Cubic Boron Nitride) tool.
主要介绍了PCBN（聚晶立方氮化硼）刀具的基本特性及其应用技术。
This paper focuses mainly on the characteristics and its application of PCBN (Polycrystalline Cubic Boron Nitride) tool.
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