... approximate expression 近似表达式 approximate factor value 近似要素价值 approximate factorization method 近似因子分解法 ...
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For design calculations, it is usually adequate to use the theoretical value for the approximate mixture ratio, corrected by a typical combustion efficiency factor.
对于设计计算,采用相应混合比的理论值,并用典型的燃烧效率系数来修正,通常这样做是恰当的。
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