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怎么分析它的力學(xué),?如圖,,請(qǐng)教 |
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評(píng)分
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點(diǎn)評(píng)
最好是有計(jì)算的結(jié)果,同感
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點(diǎn)評(píng)
因?yàn)榇蜻M(jìn)去的時(shí)候會(huì)受到錐面的擠壓
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