“ruling pen”的概念、定义、翻译、参考文献-科学参考

单词	ruling pen
释义	ruling pen [`rül·iŋ ´pen] ^{GRAPHIC ARTS} A drafter's pen that has two adjustable pointed blades between which ink is contained.
随便看	concentration cell concentration-dilution test concentration gradient concentration polarization concentration potential concentration scale concentration time concentrator concentric concentric bundle concentric cable concentric circles concentric faults concentric fold concentric fractures concentric groove concentric lens concentric line concentric locating concentric orifice plate concentric reducer concentric resonator concentric ring structures concentric slip ring concentric transmission line

科学参考收录了103327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。