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2022
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Invention
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Method for positioning auxiliary transportation vehicle in coal mine and positioning system there... |
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Invention
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Time service and positioning network system for underground chain-shaped large space in coal mine... |
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Invention
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Timing and positioning network system for coal mine underground chain-shaped large space. Disclos... |
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Invention
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Low-energy-consumption grading and positioning method for coal mine auxiliary transportation vehi... |
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Invention
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Low-power-consumption graded positioning method and system for coal-mine auxiliary transportation... |
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|
Invention
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Coal mine auxiliary transportation vehicle positioning method and system. A coal mine auxiliary t... |
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2017
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Invention
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Wireless sensor node with hierarchical protection structure. A wireless sensor node with a ... |
