“screw thread artefact”的概念、定义、翻译、参考文献-科学参考

单词	screw thread artefact
释义	screw thread artefact Encyclopedia 工学实物标准器释 screw thread artefact螺纹标准器用于复现螺纹参量的实物标准器。包括螺纹量规和螺纹样板等。
随便看	sigma-algebra prior to tau sigma-algebra prior to τ sigma aromaticity sigma bond sigma bond metathesis sigma-compactness sigma-compact set sigma-compact space sigma-complete sigma-complete ideal sigma-complete lattice sigma-completeness sigma complete vector lattice sigma complex sigma discrete family sigma-discrete family sigma electron sigma field sigma-field sigma field of events sigma-field of events sigma-field of sets sigma field prior to tau sigma-field prior to tau sigma-field prior to τ

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