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經(jīng)脈經(jīng)穴發(fā)熱與經(jīng)脈經(jīng)穴結(jié)構(gòu)恢復(fù) |
點(diǎn)評
鐵的比重是7.8,假如體積是0.1立方米,水的比重是1,汽油的比重是0.75,請入云龍分別計(jì)算出鐵在水里與在汽油里的浮力,各是多少。
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