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暖气片6分口孔是多大_家居日记
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暖气片6分口孔是多大

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暖气片6分口孔是多大 暖气片6分口径大约是2cm。管径6分是按照英制单位计算的，它对应的是dn20的管子。6分管即3/4英寸管，其内径为19.05毫米约等于2c


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