back-turning section

导读:back-turning section读音音标
[bæk ˈtə:nɪŋ ˈsɛkʃən]
back-turning section意思解释
释义折返段;

back-turning section读音音标

[bæk ˈtə:nɪŋ ˈsɛkʃən]

back-turning section意思解释

释义

折返段;

back-up
back-to-back
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