second mining

The second data mining task was to study on load profile clustering of low-voltage terminal customers based on Self-Organizing Map ( SOM) neural networks.

本文的第二个数据挖掘任务是基于自组织映射（SOM，Self-organizing map）神经网络进行低压终端用户的负荷曲线聚类研究。

Vale is the world second largest mining company and the planet's biggest iron ore producer.

作为世界第二大矿业公司,“谷”也是全球最大的铁矿石出产地.

Air leak seriously influences coal face supersedure at second air road of Dongyi mining area.

东一采区二段风道小井漏风严重影响了采煤工作面的接续,制约采区巷道维修.

Second, Mining industry survivors, this is a shortcut to the value of the investment effort.

二是挖掘幸存者行业, 这是价值投资事半功倍的捷径.

In the second part ( including chapter 2 and chapter 3), Chu-state's copper-mining tech and iron-smelting tech are particularly studied and analyzed respectively.

在第二部分中（包括第二章和第三章），分别对楚国的炼铜技术和冶铁技术作了较为详尽的研究和分析。