S 2020 S 202050 t/m α = 75°, R = 0.8 mmAH2 = 12 t/m α = 85°, R = 0.2 mm, R = 0.8 mmAH2 = 12 t/m α = 88°, R = 0.2 mm, R = 0.8 mmAH2 = 12 t/m