“roller ball”的概念、定义、翻译、参考文献-科学参考

单词	roller ball
释义	roller ball Computer See trackerball.
随便看	SG S-gate SGCS SGML sgn SH2 domain SH3 domain Shackleton, Sir Ernest Henry (1874–1922) Shack–Hartmann test shad shade temperature shading shading model shadow shadow bands shadow bank shadow buffer shadow economy shadow effect shadow-mask cathode-ray tube shadow price shadow prices shadow test shadow transit shadow zone

科学参考收录了60776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。