The Type Adjust to Influence Spirally Sewed Submerged Arc Welded Steel Pipe Weld Quantity the Analysis
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美
- 成型调整对螺旋埋弧焊管焊接质量的影响分析
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
