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Vertical installation construction method of wall panel and forming installation combination mechanism thereof
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Roof support installed along with plate
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Variable cross-section keel
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Opposite-embracing type purline connecting structure and forming method thereof
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Transversely spread buckling plate mounting structure
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Roof lock seam wind-resistant clamp
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Positive-pressure regenerative natural gas soil heating and repairing system and method thereof
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Self-powered natural gas soil heating system
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Servo energy-saving control system of natural gas soil heating device and control method thereof
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A kind of oil-polluted soils gas phase extracting and biological heap combine repair system
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A kind of metal lagging adds flexible waterproof sheet Double-layer roof system
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A kind of large span metal roofing board performance degradation assessment method and device
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