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Cách đọc kèo châu Âuձʱͨ528ձڵеת䴦ΪƽųʻijӶײĦгĦгʻйƼԺ508оһڿƼչ˹״ͳʽټ(IRDT)ʾ֤֤˴ĹԭͶؼ
ĿǰĽڹ˰˰25%ֵ˰˰Ϊ17%˰˰Ҫݷ˰ʴ1%~40%
߿ɼڹʡ20ҵһ־Ը廪ѧߵרҵϰԭ˵˸߶Ƚʹ־ԸϾպѧļרҵת۲ŷ˺һʱ526Һպ֣NASAĸ밢ޣApollo ¼ƻʵңSkylabʷϵλԱסȶAlanBean˹ҽԺȥ86
֯˽봫֯ʱŵرδ߶߶ŵʱ֯Ƴٶʱϵ·ոҽԺ̽ʿʱʱҪչսӵǿ˵ɡһִеʹվһеʵΪܳͼ⡱ǿ