英语翻译这个是讲述一个变速箱里的一个同步环（外表面带有锥面的,内表面带有油槽）的功能特点：therefore the presented friction layer has distinctive oil drainage grooves and a high,well defined porosity.（这一句我翻译出来）the opposite cone is case hardened and ground or hard turned.
问题描述：
英语翻译
这个是讲述一个变速箱里的一个同步环（外表面带有锥面的,内表面带有油槽）的功能特点：
therefore the presented friction layer has distinctive oil drainage grooves and a high,well defined porosity.（这一句我翻译出来）
the opposite cone is case hardened and ground or hard turned.
答
idontknow
答
therefore the presented friction layer has distinctive oil drainage grooves and a high,well defined porosity.：因此，所提出的摩擦层，具有鲜明的石油排水槽和高，明确的孔隙度。
the opposite cone is case hardened and ground or hard turned.：相反锥情况和地面硬化或硬关闭。
答
the opposite cone is case hardened and ground or hard turned.
对应的锥面硬度很高 并且 很坚实.
其实你不明白的是那几个并列形容词吧 意译的话 后面两个中取一个就行