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文武不全 |
文武不全 於 2014-7-31 23:02 寫道: The main purpose of flux in soldering is to The main purpose of flux in soldering is to A. dissolve surface oxides and prevent further oxidation. B. prevent recrystallization and grain growth. C. prevent oxidation and lower the melting range of the solder. D. dissolve surface oxides and lower the melting range. |
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| 乳臭已幹 |
乳臭已幹 於 2014-9-20 06:57 寫道:
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