cold grind 中文意思是什麼
cold grind
解釋
冷磨-
Crank produce by importation steels, bush produce by special material from aerospace industry, and it have cold, heat treatment and precision grind extra work
曲軸採用進口優質鋼,軸瓦採用航太工業特種材料製造,經過多次冷熱處理與精密研磨加工。
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