风力发电机

GeoGebra 命令及参数

1. Intersect(f, yAxis, (0, 0)) → C
2. Point(xAxis) → D
3. Segment(C, D) → g
4. Segment(C, E) → h
5. Segment(C, F) → i
6. Rotate(l1, (5 * a)) → l1'
7. Point(l1') → G
8. Segment(C, G) → j
9. Point(l1') → H
10. Segment(C, H) → k
11. Point(l1') → I
12. Segment(I, C) → l
13. Point(l1') → J
14. Segment(C, J) → m
15. Circle(I, H, J) → c
16. Text("Wind Speed = " + a + " m/s") → text2
17. Point(yAxis) → K
18. Segment(C, K) → n
19. Text("Power = " + b + " MW") → text1
20. Text("www.oilfutures.co.uk") → text3