“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。
随便看	trivial homogeneous ideal trivial ideal trivial intersection trivial invariant subspace trivial isometric transformation triviality triviality condition trivialization trivialized cobordism theory trivializing trivial knot trivial line bundle trivial link trivial loop trivial mapping trivial metric trivial module trivial nest trivial norm trivial operation trivial operator trivial ordered trivial ordered set trivial product trivial relation

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