“Agena family upper stage”的概念、定义、翻译、参考文献-科学参考

单词	Agena family upper stage
释义	Agena family upper stage Encyclopedia 工学“阿金纳”系列上面级释 Agena family upper stage“阿金纳”系列上面级美国第一种液体推进剂通用上面级，是世界上第一种具有三轴稳定和多次起动能力并能执行轨道机动任务的上面级。
随便看	policy and mechanism of media human resource management policy and regulation for spatial data policy bank statistics policy-based insurance policy change cycle policy change dynamics policy choice policy community policy competition policy conflicts and elimination policy cost policy design policy design research policy diffusion policy effect evaluation method policy entrepreneur policy evaluation policy evaluation object policy evaluator policy experiment and policy promotion policy for the construction of important agricultural production bases policy for transformation of resource-based cities policy holder policyholder policy impact evaluation

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。