“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	matrix symbol of an operator matrix theorem matrix theory matrix trace matrix transformation matrix transpose matrix tree theorem matrix unit matrix-valued matrix-valued form matrix-valued function matrix variate matrix-variate distribution matrix Viète theorem matrix with no entries matrizant matrocliny matroid matroid intersection theorem matroid lattice matroid partition matroid stratification matroid structure matrone Matrosov

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