在都江堰，一台大型挖掘机从一大堆碎石中铲出混凝土板和扭曲的金属杆。
In Dujiangyan, a large mechanical digger scoops slabs of concrete and twisted metal rods from a massive pile of rubble.
本文设计了大型挖掘机直流传动系统的激磁调节电路。
An excitation control circuit tor direct current drive system of large power shovel has been designed.
根据引进美国P&H公司挖掘机制造技术，探讨了大型挖掘机零件热处理技术要求的规律性。
The regularity of technical requirements for heat treatment of power shovels are investigated on the basis of licenced technique from P & H, U. S. A.
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。
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.
本文根据大型矿用机械式挖掘机动态测试方案的要求，开发研制出一种新型的推压力传感器，解决了大型挖掘机国产化研究中动态测量这一关键性技术难题。
A new thrust-pressure sensor is presented in this paper to solve such a key problem as dynamic testing in the domestication of large-sized excavators in accordance with the dynamic testing schemes.
对大型斗轮挖掘机臂架，通过考虑局部动力效应，推导了在地震荷载作用下结构单元的修正公式。
The modified formula for the boom of large complicated bucket wheel excavator has been put forward under earthquake, included the local dynamic effect.
在露天矿的开采中，大型矿用机械式挖掘机得到了广泛的应用。
In the mining of open pit, the large mechanical excavators are widely used.
本文提出在大型机械式挖掘机的提升电流信号回路中，增加继电器调节环节的方法求得提升力与推压力的合理匹配。
It is proposed in this paper that a relay regulating loop be added in the hoist current signal of large power shovel so that rational coordination between hoist and crowd capacities can be obtained.
本发明涉及一种挖掘机铲斗物料的称重方法，它属于一种称量大型矿用挖 掘机铲斗物料的称重方法。
The invention relates to a method for weighting shovel material of an excavator, which belongs to a weighting method for weighting shovel material of a large-scale excavator.
本发明涉及一种挖掘机铲斗物料的称重方法，它属于一种称量大型矿用挖 掘机铲斗物料的称重方法。
The invention relates to a method for weighting shovel material of an excavator, which belongs to a weighting method for weighting shovel material of a large-scale excavator.
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