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。
We have created a great deal of practical hydraulic equipment products, widely used in metallurgy, electric power, petrochemical, construction, shipbuilding, machinery and other industries.
研制了大量实用型液压机具产品，广泛用于冶金、电力、石化、建筑、船舶、机械等行业。
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