以一种现场常用的PDC取心钻头为原型，充分考虑排屑槽和切削齿对于井底流动的影响，建立了与实际相接近的PDC取心钻头井底流场的物理模型。
The bottom hole flow physical model of a kind of PDC coring bits is established considering the effect of junk slot and teeth layout in this paper.
利用这种原理，可提高电火花加工性能，在小孔、深槽等加工应用中起到促进排屑的作用。
Applying the principle to EDM can improve the machining performances, and playing the role of removing chips in the small hole-making and machining of deep slots.
利用这种原理，可提高电火花加工性能，在小孔、深槽等加工应用中起到促进排屑的作用。
Applying the principle to EDM can improve the machining performances, and playing the role of removing chips in the small hole-making and machining of deep slots.
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