“directional light source”的概念、定义、翻译、参考文献-科学参考

单词	directional light source
释义	directional light source Encyclopedia 理学光源释 directional light source平行光源平行光源是理想化的发出光线平行无发散的光源。
随便看	axiom of choice (AC) axiom of closure axiom of complete induction axiom of completeness axiom of comprehension axiom of congruence axiom of connection axiom of constructibility axiom of constructivity axiom of continuity axiom of countability axiom of countable choice axiom of denumerability axiom of dependent choice axiom of determinacy axiom of determinacy (AD) axiom of domination axiom of elementary sets axiom of empty set axiom of equality axiom of existence axiom of extensionality axiom of foundation axiom of free mobility axiom of identity

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。