Hydraulic control adopt insert type compact valve system, with reliable operation, long service life, minimized hydraulic shock, minimized duct connection and possible leak point.
液压控制采用插装阀集成系统，动作可靠，使用寿命长，液压冲击小，减少了连结管路与泄漏点。
For in-service structure it is difficult to con duct destructive test since its original finger print is hard to obtain.
在役结构因其原始指纹不易获得，使得对其进行损伤检测存在一定的困难。
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