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Clamping device for dismounting
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Method for calibrating gun calibration mirror
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Investigation, operation and aiming system of forest fire extinguishing equipment
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A kind of multistage gas big gun recoil mechanism
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A method of improving welded joints in aluminium alloy backing weld seam penetration
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A method of it is quenched based on fluidised form graphite particle stove heating parts locally
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It is a kind of can Fast Installation and the screw-type steering wheel freed
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