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一種緩沖裝置的原理不明白 求解釋 |
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點(diǎn)評(píng)
這是書的范例,教人知識(shí)的
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點(diǎn)評(píng)
有道理
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點(diǎn)評(píng)
齒輪貌似可以改變彈簧的張開幅度和速度,同時(shí)通過齒輪子轉(zhuǎn)動(dòng)來吸收滑臺(tái)的動(dòng)能
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