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环加成反应
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环加成反应
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环加成反应
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cycloaddition reaction
环加成反应
两个或多个不饱和化合物(或同一化合物的不同部分)结合生成环状化合物,并伴随着重键数减少的化学反应。
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man-machine system modeling
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man-made climatic chamber
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Manned Deep Submersible Submariner Heroes Group
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