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Seismograph for detecting earthquake occurrence and direction and application
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LED light source module
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Epoxy resin PCB circuit board
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Method for packaging non-bonding electronic tag chip
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A kind of anti-probably street barricade of assembly type
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The anti-interference control method of frequency converting speed regulating three-phase asynchronous electromotor peculiar to vessel
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A kind of anti-interference control method of permanent magnetic speed-adjusting high-voltage three-phase asynchronous motor
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A kind of operating method of spontaneous emission ping-pong robot
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A kind of spontaneous emission ping-pong robot
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Button of getting off with defencive function
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Button of getting off protects control method
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Passenger getting off car alarm set control method used for buses
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Passenger getting off car alarm set used for buses
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A kind of night repairs and uses gel face cream
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A kind of antioxygen moisturizing elite
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It is a kind of to rotate the projection bracket used
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One kind hides flaw whitening skin toner cream
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A kind of soilless culture high-effective chemical fertilizer
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A kind of salubrious face cream of quality
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A kind of traditional beverage formulation of anti-aging
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