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【多选题】
设竖曲线半径、长度和切线长分别为 R 、 L 和 T ,转坡点处坡度角为ω,则竖曲要素计算公式正确的有( )。A.
L=R/ ω
B.
L=R ω
C.
L=R+ ω
D.
T=1/2L
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