1 Subjects: “...tool wear...”

2 Subjects: “...wear resistance...”

3 Subjects: “...contact wear...”

4 Subjects: “...degree of wear...”

5 Subjects: “...wear...”

6 Subjects: “...electrode wear...”

7 Subjects: “...oil pump wear...”

8 Subjects: “...wear resistance...”

9 Subjects: “...wear-resistant composite...”

10 Subjects: “...wear-resistant composite...”