The engineers of the electrical projects department and the hydraulic department give the machine its "lifelines" : electrical and hydraulic powering.
电气项目部及液压工程部的工程师们给予我们的产品以“生命”：电气及液压能源。
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Mine hoist is the throat and lifelines of mine. That its performance is safety or not will not only effect the productive efficiency but also bring some serious societal impact.