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The results in this paper can be used to judge retirement of old oil tubes.
本文研究结果对旧油管判废具有工程应用价值。
youdao
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In this paper the gas gain of proportional tubes are discussed.
本文讨论正比管的气体放大。
youdao
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In this paper the gas gain of proportional tubes are discussed.
本文讨论正比管的气体放大。
youdao