dandanso 发表于 2023-12-2 04:12   全显示 1楼
我猜测当年郑和下西洋走的路线，能带回来的大部分应该还是特殊矿产，植物，宗教和天文类的书籍可能比较多，应该那个时候超过大明多先进科技生产力不会太多，唐宋明就是向外输出的国家，但是出海下西洋好比我们自己建造航母一样，只有用了，才知道航海技术自身的不足，才会迭代改进，当然我觉得就算流下来图纸了，大明要是没了，清朝那些土鳖也不见得会在造船出海
本帖最近评分记录
  • hui329 金币 +10 明朝可不只是输出，一路设立抽分厂收税的 ... 2023-12-6 07:32
  • qwer___12 金币 +16 认真回复，奖励！ 2023-12-3 01:09
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