“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	pickle liquor pickle patch pickle stain pickling pickling acid pick miner pickoff Pick's disease pickup pickup tube pickup voltage pico- picoammeter picoampere picodnavirus picofarad picoline picolinic acid picornavirus picosecond picotite picowatt picramic acid picratol picric acid

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。