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瑞典的哥德堡大學(Universitiy of Gothenburg)與伊朗的伊斯法罕大學(University of Isfahan)的研究人員運用新的幾何結構,開發出一種能更有效保護頭部的新型自行車安全帽。這款安全帽的避震材料具備「雙向收縮」特性 ...
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