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JPS60236077A
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Acoustic sounding method for correcting oscillation of hull
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JPS60215907A
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Protector for caisson-type wave power generator
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JPS60114307A
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Treating apparatus of surplus water from reclamation
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JPS60223538A
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Dredger
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JPS6088784A
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Electromagnetic irradiation apparatus for crushing sea bottom rock
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JPS6088785A
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Electromagnetic irradiation apparatus for crushing sea bottom rock
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JPS6089715A
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Inspecting and measuring device of underwater working surface
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JPS6050471A
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Ultrasonic detecting and measuring apparatus of constructed surface
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JPS5984121A
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Water contact signal processing type stepwise crest measuring device
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JPS57151712A
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Concrete block
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JPS57119887A
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Waterspout type recovery device for waste oil ball
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JPS57119888A
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Waterspout type recovery device for waste oil ball
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JPS57119889A
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Waterspout type recovery device for waste oil ball
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JPS56167005A
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Connecting structure of pavement plate
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JPS56167004A
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Gap filling method of precast pavement plate
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JPS55126844A
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Measuring method for deposited oil
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JPS552117A
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Odd caisson for breakwater
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