随着本世纪科学技术突飞猛进地发展,图书馆事业经历了一次又一次的巨变,图书馆的服务功能也不断地得到了更新。现代图书馆的发展经历了三个阶段。 With the rapid development of science and technology in this century, the library industry has undergone great changes again and again, and the service functions of libraries have been continuously updated. The development of modern library has gone through three stages.