与"direct reading ph meter"相近的词条

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• direct-reading disc-type tuberculin reaction measuring plate
• direct reading dosimeter、direct-reading dosimeter
• direct reading exposure meter
• direct reading glass electrode pH meter
• direct reading microchemical balance
• direct reading ph meter
• direct reading photometer
• direct-reading scale
• direct reading table balance
• direct reading thermometer、direct-reading thermometer
• direct reapeats
• direct recorder
• direct-recording
• direct red
• direct red 4B
• direct reflectance

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