?10
?505
10?10?50510
51015
202530
R ?50
5
z
?2?101
2
?40
?2002040?40?20020
40
?2.5?2.0?1.5?1.0?0.50.0
?4
?2024?4?202
4
2.50 2.55 2.60 2.65 2.70
?0.070?0.065?0.060?0.055?0.050?0.045?0.040?0.035
?0.50.00.5