Common Data Format 介绍
国家空间科学数据中心（NSSDC）通用数据格式（CDF）是自我描述的数据在一个平台和独立的学科方式的多维数据存储和操纵
的抽象。它包括了科学的数据管理软件包（如“民防图书馆”），允许程序员和应用开发，管理和操作标量，矢量和多维数据数组。
The National Space Science Data Center’s (NSSDC) Common Data Format (CDF) is a
self-describing data abstraction for the storage and manipulation of
multidimensional data in a platform- and discipline-independent fashion. It
consists of a scientific data management package (kNown as the “CDF Library”)
that allows programmers and application developers to manage and manipulate
scalar, vector, and multi-dimensional data arrays.