??????????????????????ٵĻ????ϼ?????????????2017?꣬ȫ?????????۶?71751??Ԫ??????32.2%??
????????ҵ̬???ֿ?????????ͬʱ????ͳ????ҵ??ҵ??????չ?????????????ָֻ???????̬?ơ??ݲ??㣬2017?꣬ͨ????????ʵ?ֵ???Ʒ???۶?ռ?????ϵ?λ????Ʒ???۶?ı?????2016???6.2%??ߵ?2017???7.9%?????????С??ٻ??ꡢרҵ??????ڵ??????ϵ?λʵ??????ҵ̬???۶??????????8.4%??
??????????????Ʒ???ٱ?????ͬ?ڼӿ죬?????г??????Ϊ??Ծ??
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特别是常规潜艇世界第一