For truck with trailer or special vehicle for mining operations, the standard usage life is 8 years.
带拖挂的载货汽车、矿山作业专用车使用8年。
This paper presents the usage and maintenance of utilizing two engines to drive underground conveyer belt in Tongting Coal Mine, Huaibei Mining Group.
介绍淮北矿业集团公司童亭煤矿井下皮带输送机双机拖动使用、维护的实况及防范措施。
The main usage and characteristics of shuttle mining car are introduced. The load design of shuttle mining car's scraper conveying mechanism is analyzed and determined.
介绍梭式矿车的主要用途和特点，梭式矿车的刮板运输机构在设计中的受力分析和确定。
The usage of the data mining and OLAP in the system is also discussed. The paper provides a decision support process for the system.
还研究了OLAP与数据挖掘在该系统中的作用，与该系统进行决策支持的一般决策过程。
Sequential mining is utilized in the fully-mechanized face in Sihe mine. 7200/23/38A chock support is used in entry, some problems on its usage and related improvement opinions are put foreward.
寺河矿综采工作面巷道采用顺序开采的回采方式。选用7200/23/38 A型垛式支架对巷道进行超前支护，实践中提出了支护过程中存在的几点问题并提出了改进意见。
It also describes the presence of web information and the method of collection of web information. It describes the usage of data mining technology and build of agriculture data model.
分别论述了收集原则、信息的存在方式与收集方式，并介绍了应用数据挖掘技术，建立农业数据模型等方面的内容。
On the basis of above, summarize application value of Web usage mining, data source of mining, data preprocessing and mining method and some applied tools of Web mining.
在此基础上，综述了W E B使用挖掘的应用价值、挖掘的数据源、数据的预处理、挖掘的方法和几种适用于WEB挖掘工具。
On the basis of above, summarize application value of Web usage mining, data source of mining, data preprocessing and mining method and some applied tools of Web mining.
在此基础上，综述了W E B使用挖掘的应用价值、挖掘的数据源、数据的预处理、挖掘的方法和几种适用于WEB挖掘工具。
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