自信度是太大了點。發動機材料跟了老鵝幾十年,你用合金鋼,美,日隻用炭鋼加上熱處理就被beat掉了。連熱處理都比日本差一大截。
自信度是太大了點。發動機材料跟了老鵝幾十年,你用合金鋼,美,日隻用炭鋼加上熱處理就被beat掉了。連熱處理都比日本差一大截。
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