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首屆中國國際進(jìn)口博覽會開幕

來源：新華社作者：方喆等發(fā)布：2018-11-06 14:57:46

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11月5日，一名德國西門子展臺的工作人員（中）向參觀者講解分布式能源系統(tǒng)的工作原理。新華社記者方喆攝

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