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A composite rod is made of copper α=1.8×10−5K−1 and steel 1.2×10−5K−1 as shown in figure, is heated up, then it |
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Answer» A composite rod is made of copper α=1.8×10−5K−1 and steel 1.2×10−5K−1 as shown in figure, is heated up, then it |
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