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Dustproof maintenance-free single-slit type reinforced bridge expansion device and method
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Durable reinforced small-displacement bridge expansion device
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Assembled multi-slit telescopic device
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Small-displacement dustproof noise-reduction maintenance-free expansion device
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Enhanced comb-tooth type vibration and noise reduction bridge expansion device and method
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Assembled novel displacement guide bridge expansion device
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Strenghthened type small displacement volume telescoping device
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Reinforced vibration-damping noise-reducing multidirectional displacement telescopic device
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Reinforced multidirectional displacement telescopic device
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Enhanced large-displacement bridge expansion device and adjustment method
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Method for applying durable noise-reducing maintenance-free bridge expansion device
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A kind of method of ball-type tension bridle iron and multi-angle distractive load
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A kind of dust-proof slag freedom from repairs bridge extension joint and waterstop
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The board-like bridge extension joint of life-cycle non-bolt multi-directional deflection broach and method
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A kind of long-life freedom from repairs bridge extension joint and waterstop
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A kind of integrated-reinforcing modulus type multi-directional deflection retractor device and method
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Curvilinear mold numerical expression damping vibration attenuation multi-directional deflection retractor device and method
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Modular pattern reinforced multidirectional deflection telescopic device and method
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ZEY-type large-stroke bridge expansion device
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