如图所示斜面长1m高04m用大小为5n沿斜面�上的拉力f将重10n的铁块从底端匀速拉到顶端斜面的机械效率为 若仅使倾角θ逐渐增大 Template




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Try and sketch some of theseFeast, Wife, Submarine, Spats, Ice house, Iron, Ham, Gold mine, Queen, Flute, view more ideas


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tomski如图所示斜面长1m高04m用大小为5n沿斜面�上的拉力f将重10n的铁块从底端匀速拉到顶端斜面的机械效率为 若仅使倾角θ逐渐增大 coloring