| 摘要 |
A cutting element comprises a primary cutter (20) including a first table (24) of a hard material bonded to a first substrate (26) of less hard form, the first substrate (26) of the primary cutter (20) having a recess (28) formed therein in which a secondary cutter (22) is located, the secondary cutter (22) comprising a second table (32) of a hard material bonded to a second substrate (30) of less hard material, the first and second tables (24), (32) being spaced apart from one another by at least part of the first substrate (26). |
