中文摘要：

详细介绍了聚晶金刚石的性能特点，聚晶金刚石在汽车、航空航天、木材加工、电子行业、石油地质钻探、线材模具、玻璃切割和宝石加工行业的应用现状，并对其发展趋势进行了展望。

英文摘要：

The performance and characteristics of polycrystalline diamond（PCD） and its application status in the field of automobile, aviation ＆ spaceflight, wood processing, electron industry, petroleum geology drilling, wire mould, glass cutting and gem machining and so on were described in detail. The development trends of PCD were summarized.