阐述了中国拥有大量低技术水平的柴油机而使用柴油机排气微粒过滤与再生装置的重要性。
The importance to use the diesel particulate filter and the regenerator is described on the condition that China has a great quantity of diesel vehicles with lower technical levels.
在印度大陆东部200英里（326公里）处，Tata咨询服务中心的总技师Ananth Krishnan也在为一个低技术的设备而激动不已：清水过滤器。
In Chennai, 200 miles (326km) farther east, Ananth Krishnan, chief technology officer of Tata Consultancy Services (TCS), is equally excited about an even lower-tech device: a water filter.
协同过滤技术分为基于内存和基于模型两种，前者的推荐准确度更高，但可扩展性比后者低。
Collaborative filtering can be divided into memory based and model based. The former is more accurate while the latter performs better in scalability.
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