Keras,kekerasan ( hardness )

In Kamus Geologi Tambang 293 views

Keras,kekerasan ( hardness ) merupakan Sifat daya tahan logam atau mineral terhadap tusukan, goresan, abrasi, atau pemotongan; urnumnya dipergunakan skala kekerasan Mohs, Brinnell, Vickers, atau Rockwell

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