[問題] 為什麼車不用鈦金屬?
現在車動不動就上百萬,
老實說,
鈦金屬也不會貴到那去,
如果車的關鍵幾個點
ex:a,b柱,和側邊幾個關鍵地方加上幾根鈦金屬條
如此車耐撞度必上升,
但現在連volvo情願用硼鋼也不用鈦金屬?
為什麼如此?
百思不解
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