文中给出了液压拉伸器的正确使用与维护方法。
The correct operating and maintenance methods of equipments are given.
液压拉伸器是一种先进的螺栓预紧和拆卸工具，己广泛用于大直径螺栓的预紧。
Hydraulic Stretching Equipment is a advanced tools for bolts' pretension and disassembly, it is widely used in the pretension of major - diameter bolts.
液压拉伸器是一种先进的螺栓预紧和拆卸工具，己广泛用于大直径螺栓的预紧。
Hydraulic Stretching Equipment is a advanced tools for bolts' pretension and disassembly, it is widely used in the pretension of major - diameter bolts.
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