57.下列關於 rounded-end MLC 的穿透(transmission)率,何者最高?
(A)intra-leaf transmission
(B)inter-leaf transmission
(C)leaf-end transmission
(D)leaf-side transmission
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統計: A(2), B(6), C(5), D(2), E(0) #3976836
統計: A(2), B(6), C(5), D(2), E(0) #3976836