“primary standard for OCTG threads”的概念、定义、翻译、参考文献-科学参考

单词	primary standard for OCTG threads
释义	primary standard for OCTG threads Encyclopedia 工学螺纹计量技术释 primary standard for OCTG threads石油螺纹参量计量基准用以复现和保存石油螺纹的量值。在中国是作为石油螺纹参量定值依据的测量装置。
随便看	spherical tank spherical tensor spherical tessellation spherical torus spherical transformation spherical triangle spherical triangular coordinate spherical trigonometry spherical type spherical vector field spherical volume spherical wave spherical wave equation spherical wave transformation spherical wedge spherical zone sphericity sphericity coefficient sphericon spherics spheric section spherocity sphero-conic spherocrystal spherocyte

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。