进口的隧道挖装机经长期使用，液压系统损坏严重。
After long-period use of the imported crawling loaders, the hydraulic systems of the crawling loaders are damaged seriously.
攀登时，使用损坏或泄漏的液压系统，没有任何的调整，这并不鲜见。在黑暗中工作和延长工作时间是时有发生的。
It is not uncommon for climbs to continue with damaged or leaking hydraulic systems, out-of-adjustment or jammed guide rollers, often working in the dark and for extended hours.
由于自卸系统的HW32-2型举升液压泵损坏，造成一台卡玛兹5511型自卸汽车无法使用。
The breakdown of the HW32-2 hydraulic pump of the dumping system causes a model 5511 Kamaz dump truck to be out of service.
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