“原行星状星云”的概念、定义、翻译、参考文献-科学参考

单词	原行星状星云
释义	原行星状星云 Encyclopedia 理学原行星状星云释 proto-planetary nebula;proto-PNe原行星状星云中小质量恒星（0.8～8.0太阳质量）处在从渐近巨星支（AGB）恒星向行星状星云过渡的一个快速演化阶段（持续时间约1000年）的天体。 Astronomy proto-planetary nebula原行星状星云
随便看	effective cross-section effective cross-section of collision effective cross-section of ionization effective cross-section of recombination effective curve effective cutoff effective cutoff frequency effective cycle effective damping constant effective definition effective degree effective demand effective density of dense medium suspension effective derivation effective descriptive set theory effective diameter of objective effective Diophantine approximation effective discharge effective distance effective divisor effective domain effective dose effective elastic thickness effective enumeration effective equivalent dose

科学参考收录了854744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。