“helical seam submerged-arc welded steel pipe”的概念、定义、翻译、参考文献-科学参考

单词	helical seam submerged-arc welded steel pipe
释义	helical seam submerged-arc welded steel pipe Encyclopedia 工学螺旋缝埋弧焊钢管释 helical seam submerged-arc welded steel pipe螺旋缝埋弧焊钢管管道运输所用的采用埋弧焊工艺制作的带有一条螺旋焊缝的管子。
随便看	phase complex conjugate optics phase complex conjugation phase conjugate laser phase conjugate mirror phase conjugate wave phase conjugation phase constant phase constituent phase contrast phase contrast microscope phase contrast microscopy phase-contrast microscopy phase contrast wavefront sensor phase-controlled rectifying circuit phase control trigger circuit phase convention phase coordinate phase correlation phase current phase curve phased array phased array antenna phased array antennas phased-array antennas Phased Array Feed

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