“National Gravity Fundamental Network 1957”的概念、定义、翻译、参考文献-科学参考

单词	National Gravity Fundamental Network 1957
释义	National Gravity Fundamental Network 1957 Encyclopedia 工学重力测量释 National Gravity Fundamental Network 1957; NGFN 19571957国家重力基准网中国建立的第一个国家重力控制网。共有27个基本重力点（包括南京、青岛、上海三个摆仪点与青岛市内的二点）和80个一等重力点。
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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。