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airtight transportation
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airtight transportation
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airtight transportation
密闭输送
长输管道各中间泵站间采用密闭连接方式,上一泵站的来油直接进本站的泵,中间泵站上不设置与大气相通具有缓冲作用的油罐,油品在密闭状态下输送的输油方式。
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