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与"hardness scale"相近的词条

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• hardness determination
• hardness meter、hardness-meter
• hardness number
• hardness of hearing
• hardness of water
• hardness scale
• hardness test
• hardness tester
• hardness value
• hardometer
• hardpan
• hardparaffin
• hardscrabble
• hardship
• hardstuff
• hardtack

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