As important engineering machine, hydraulic excavator is widely used in earthwork construction and mine exploitation.
液压挖掘机作为重要的工程机械，广泛应用在各种土石方施工和矿山采掘业中。
The paper discusses the employment situation of big excavator in domestic mine, big excavator in Benxi Steel Nanfen opencast mine is made for example to illustrate its action in mine production.
主要讨论了大型挖掘机在我国矿山上的使用情况，以本钢南芬露天矿的大型挖掘机为例说明其在矿山生产中发挥的作用。
A general mathematical model of excavator truck Optimal fit in Open pit mines is derived. An Optimal fit computation is taken as an example of the mine of Emei Cement Plant.
本文推导了一般露天矿山铲—车优化配置的数学模型表达式，并以峨眉水泥厂矿山为例进行了优化配置计算。
Coal excavator is a complicated system that consists of machinery, electric and hydraulic drive, etc. It works in adverse circumstances. Its stop by faults will cause whole mine system to break down.
采煤机是一个集机械、电气和液压为一体的大型复杂系统，工作环境恶劣，如果出现故障将会导致整个采煤工作的中断，造成巨大的经济损失。
Coal excavator is a complicated system that consists of machinery, electric and hydraulic drive, etc. It works in adverse circumstances. Its stop by faults will cause whole mine system to break down.
采煤机是一个集机械、电气和液压为一体的大型复杂系统，工作环境恶劣，如果出现故障将会导致整个采煤工作的中断，造成巨大的经济损失。
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