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chemistry and electricity中文是什么意思

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用"chemistry and electricity"造句"chemistry and electricity"怎么读"chemistry and electricity" in a sentence

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  • 化学与电学

例句与用法

  • At present , the distance of the pipelines running in the industry of oil refining , petrol - chemistry and electricity in china is around 500 , 000 kilometres . the majority of them last one or two decades , gradually resulting in the summit of accidents with various degrees of erosion and cracks
    我国石油、化工等行业的在役油气长输管道总长约50万公里,其中大部分管道已使用10 ? 20年以上,出现不同程度的腐蚀、裂纹等缺陷,逐渐进入事故高发期。
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