安装、维护、保养方便，经久耐用。
Convenient to install, maintain and preserve, sturdy and durable.
改造后的液压系统流量充分、压力稳定、动作迅速，且调整和维修保养方便，故障率低。
The transformed hydraulic system has abundant flow capacity, stable pressure, swift motion and low failure rate and it is convenient to adjust and maintain.
改进后的升降装置具有更高的可靠性，运动平稳，定位及对中精度高，结构紧凑，维护保养方便。
Modified lifting motion is provided with higher reliability and precision of allocation and alignment, stable motion, compact structure, and convenient maintenance.
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