“1∶50000地质图数据库”的概念、定义、翻译、参考文献-科学参考

单词	1∶50000地质图数据库
释义	1∶50000地质图数据库 Encyclopedia 理学地质调查数据库释 1∶50000 database of geological map1∶50000地质图数据库应用计算机技术、地理信息系统和数据库技术，将1∶50000区域地质调查工作中获取的基础地质成果资料（地质图、矿产图等）进行数字化形成的空间数据库。
随便看	second category set second cementing interface second characteristic polynomial second class of ordinal numbers second comparison test second complementary law second component second conjugate space second contact second control second cosine formula second cosine theorem second cosmic velocity second countability axiom second countable space second countable topological space second Cousin problem Second creation second critical magnetic field second cultivated machinery second curvature second demographic transition second derivative second derivative test second derivative test discriminant

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