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送交者: 克己明德 于 2008-12-04, 20:12:40:
回答: CO2 refill是干什么用的?有时候自行车店也有这个服务 由 HunHunSheng 于 2008-12-04, 17:28:35:
Because CO2 leaks out of a rubber inner tube more rapidly than air would (despite its larger size, the CO2 molecule is slightly soluble in rubber), the tire goes flat again within just a few days.
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