“penna”的概念、定义、翻译、参考文献-科学参考

单词	penna
释义	penna [`pen·ǝ] See <<contour feather>>
随便看	light-operated switch light panel light pen light pillar light pipe light-positive light projector light quantum light radiation light radius light ratio light ray light-red silver ore light reflex light relay light-ruby silver light scattering light-scattering photometry light section car light sector light-sensitive light-sensitive cell light-sensitive detector light-sensitive tube light sensor photodevice

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。