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關(guān)注：1
2013-05-23 12:21
求翻譯：回火為什么先關(guān)氧氣閥是什么意思？ 待解決
 懸賞分：1
- 離問題結(jié)束還有
回火為什么先關(guān)氧氣閥
問題補(bǔ)充： |
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2013-05-23 12:21:38
Why first off the oxygen valve tempering
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2013-05-23 12:23:18
Why Is oxygen flash-back valve
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2013-05-23 12:24:58
Why does the tempering turn off the oxygen air valve first
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2013-05-23 12:26:38
Tempering why closed oxygen valve
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2013-05-23 12:28:18
Why first off the oxygen valve tempering
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