The thickness ratio of the ferrite and cementite layers in pearlite is approximately（）._精华吧

The thickness ratio of the ferrite and cementite layers in pearlite is approximately（）.

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The thickness ratio of the ferrite and cementite layers in pearlite is approximately（）.

A.8 to 1

B.6 to 1

C.5 to 1

D.4 to 1

正确答案：8 to 1

Tag：材料导论时间：2022-01-28 20:08:18

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