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The source and utility circumstance of dry gas is easily introduced in this paper.
简单地介绍了干气的来源和利用情况。
youdao
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The utility model relates to power supply technique of an electric source.
本实用新型涉及电源供电技术。
youdao
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The utility model relates to power supply technique of an electric source.
本实用新型涉及电源供电技术。
youdao