屬於當時最先進的斯貝渦扇發動機的引進是72年開始接觸，74年談判，75年底引進合同簽字。

來源: POCOCAT 於 2021-08-24 22:42:07 [舊帖] [給我悄悄話] 本文已被閱讀：次

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