Bor Tumbuk ( Percussion Drill, Churn Drill )

In Kamus Geologi Tambang 84 views

Bor Tumbuk ( Percussion Drill, Churn Drill ) merupakan Bor yang daya tembusnya diperoleh dengan penumbukan secara cepat dan teratur; sin. Bor tutukan

Cari Istilah Geologi Tambang


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