()


: 2
:



(²) ()
L d d1
() 1.5 0.5–1.5 15.0 3.0 1.8
() 2.5 2.5 15.0 3.5 2.3
() 4 4 15.0 4.5 3.0
() 6 6 15.0 5.5 4.0
() 10 10 20.0 6.7 5.0
() 16 16 20.0 7.4 5.4
() 25 25 30.0 9.0 6.7