斯坦福大学有关于机器学习的英文讲义，主讲人为Andrew Ng。
Stanford University about machine learning English handouts, speaker artificially Andrew Ng. (2013-09-04, PDF, 2470KB, 下载2次)
德国马克拉轮毂-车轮检测技术.pdf
德国马克拉（MAKRA）检测技术股份有限公司位于巴登符腾堡州的
布鲁赫萨尔城，是一家开发生产汽车车轮试验/检测设备及包括铝
车轮在内的各种复杂零部件夹具工装的专业厂家。产品广泛应用于
欧、美、日、韩及世界著名汽车车轮制造厂，并为德国技术监督协
会（TUV）车轮/轮胎检测证中心提供了多台跳动/弯曲疲劳/冲击试
验机，用于用户产品的检测认证。
Germany Make La wheels- wheel detection technology. Pdf Detection Technology Co., Ltd. is located in Baden-Württemberg city of Bruchsal, Germany Make La (MAKRA), is a development and production of automobile wheel test/inspection equipment and includes alloy wheels including a variety of complex parts for the fixture of the professional manufacturers of tooling. The products are widely used in Europe, the United States, Japan, Korea and the world famous automobile wheel manufacturer, and the German Agency for Technical Supervision Association (TUV) wheel/tire test certificate Centre provides more than one beat/bending fatigue/impact test machine for users Product testing and certification. (2012-06-08, PDF, 429KB, 下载7次)