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火車是怎么拐彎的啊。 |
點(diǎn)評(píng)
我想樓主說(shuō)的火車拐彎與傾角無(wú)關(guān)吧?
估計(jì)他想問(wèn),火車輪距與軌道一樣寬,軸間也是成剛性長(zhǎng)方形的,如果與弧面接觸,不就別起了?
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