[請益]羽毛球為什麼非用「羽毛」不可?
羽毛球壞的快,心裡總想,
到底是羽毛哪項物理特質,
而非用羽毛不可?
現在各種材料科技那麼進步?
難道沒有可以取代羽毛的嗎?
還是廠商不願意開發....
因為用不壞,誰要一桶一桶買球啊???
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