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Terms for subject Scientific containing C-two | all forms
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A mixture of extremely fine silica and lead oxide is furnaced for two hours at 625°C.将二氧化硅和氧化铅的极细混合物在625°C炉中熔炼两个小时。
Two propositions A and B may imply a third C.两个命题A和B可能隐含着第三个命题C。

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