Anti-seismic full-life bridge basin-type ball steel support
According to the anti-seismic full-life bridge basin-type ball steel support, a cylinder is fixedly connected to the middle of a supporting frame, the outer curved surface of the cylinder is movably connected with a movable sleeve in an attached mode, the inner side face of the movable sleeve is fix...
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Format: | Patent |
Sprache: | chi ; eng |
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