本文讨论了主要开拓巷道的概念和开拓方法的分类，以及各种开拓方法在黄金矿山的应用。
This paper discusses the concept of main development tunnels and the classifications of development methods and describes the application of all kinds of development methods in gold mines.
利用可拓集合，给出了可拓资源的形式化定义；同时分析了可拓资源的类型，研究了资源的开拓方法。
Based on extension set, the concept of extension resource is proposed, the types of extension resource are discussed, the developing methods of resource are analyzed.
一些有开拓精神的成员找到了减少开支或增加收入的方法。
Some enterprising members found ways of reducing their expenses or raising their incomes.
应用推荐