“national astro-geodetic network”的概念、定义、翻译、参考文献-科学参考

单词	national astro-geodetic network
释义	national astro-geodetic network Encyclopedia 工学大地起算数据释 national astro-geodetic network国家天文大地网在中国领土范围内，由互相联系的大地测量点（简称大地点）构成的网，大地点上设有固定标志，以便长期保存和使用。简称国家大地网。建立国家大地网的经典方法是边角测量，需要采用天文观测方法测定天文经纬度和方位角，所以又称为天文大地网。
随便看	condition of convergence condition of effectivity condition of electrical neutrality condition of electrostatic equilibrium in conductors condition of equivalence condition of identity condition of integrability condition of involution condition of left invariant condition of left-invariant condition of orthogonality condition of parallelism condition of perpendicularity condition of right invariant condition of right-invariant condition of roll bite condition of solvability condition of symmetry condition of transmission condition of transversality condition of univalence conditions for determining solution conditions for similarity of fluid machinery conditions management of test aircraft Conditions of Contracts of International Federation of Consulting Engineers

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