“upper nut”的概念、定义、翻译、参考文献-科学参考

单词	upper nut
释义	upper nut 上螺母
随便看	four-tone telegraph system four-track line four-track recorder four-track sound recording four-track tape four-tube camera four-turn road four types of soil four-tyre car four-unit code four-unit sliding door four-valve receiver four vector four-vector four-vector potential four-vertex theorem four vidicon camera four-wave mixing four-wave sum-mixing four-way four-way box four-way branch four-way change-over valve four way cock four-way cock

科学参考收录了1248194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。