(3) ductuli epididymis with least and pilus on the epidermis and (4) circular ductus epididymidis with least cutaway.
③附睾小管：管径最小，
皮有纤毛；④附睾管：切面最少，管腔圆整。
(3) ductuli epididymis with least and pilus on the epidermis and (4) circular ductus epididymidis with least cutaway.
③附睾小管：管径最小，皮有纤毛；④附睾管：切面最少，管腔圆整。
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