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. 2021 Oct 8;14(19):5887. doi: 10.3390/ma14195887

Figure 20.

Figure 20

The specimen surfaces tested in lubricated conditions using LAN-46 machine oil (Ra = 0.63 μm, h = 12 mm, w = 14 mm, orientation 90°) at different magnifications: (a) ×970 and (b) ×530.