In library science , machine readable catalog , a system initially developed in the us library of congress with the purpose of organizing and disseminating bibliographic data , in machine readable form , for incorporation into national and local records for the purpose of documentation 在图书馆学中的机读目录系统，该系统最初由美国国会图书馆建立，其目的是以机读形式组织和传播书刊目录数据，将目录数据并入国家和本地记录中，以便成卷存档。
In the very beginning , outsourcing the production of bottled wine and awarding the sole distributors to retail the final products , a company was focused on its brand promotion . after that , going with its expansion , it started extending vertically on the industry chain to build its own factory and sales force . however , it oriented again in the face of tense competition wine field , canceled the sales network , changed the ideology and put into the obm mode into the practice 自1998年成立以来,伴随着葡萄酒行业的成长期, a企业经历了一个比较典型的中小葡萄酒企业的发展过程:最初由生产全部外包,销售上采用经销商制,公司仅负责的品牌的营销与推广;到逐步在产业链条上纵向延伸,发展为自己生产制造和终端销售;最后在激烈的市场竞争中,重新定位,取消直销网络,转换营销思路,以承揽对外贴牌的加工业务,即实行obm为主要的运作模式。
Until about ten years ago , we believed that the only properties we can tell about a black hole are its mass , angular momentum loosely speaking its spinning rate and its electric charge . two black holes that have the same mass , angular momentum and charge will behave in exactly the same way . in particular , it does not depend on what kinds of material it forms from 原理：十年之前，我们相信黑洞是一个很简单的物体，三个物理参数质量角动量如要求不严谨，可把它看成为自转速度和电荷便决定了它的一切，两个黑洞只要它们这三个参数相同，物理特性便完全一样，黑洞最初由甚么物质所造成是无关宏旨的，由于黑洞是这样单纯，光秃秃没有甚么特徵，所以天文学家谑称黑洞没有毛发。
