... levelling cylinder rod；平地油缸活塞杆 levelling operation；平地工作(操作) levelling pilot valve；平地先导阀 ...
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Therefor according to characteristics of operation units in Heilongiiang power system, a reasonable and effective repair programme is made by levelling risk method to improve power supply reliability.
为此，必须针对我省设备运行特点，用等风险度法编制合理有效的检修计划，以提高我省的供电可靠性。
Fully-automated levelling of the outriggers and ballasting with advanced keyhole technology increases the quick readiness for operation of the crane.
全自动支撑水平调节与先进的钥匙孔技术实现快速配重安装，加快了起重机投入使用的速度。
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