71.如圖為多葉式準直儀品保程序中,穿透因子與中心軸距離的關係圖,最能顯示何種現象?
(A)geometric penumbra
(B)rounded leaf end
(C)interleaf and intraleaf transmission
(D)transmission penumbra
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統計: A(167), B(269), C(2015), D(396), E(0) #2181925
統計: A(167), B(269), C(2015), D(396), E(0) #2181925