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The results show that the bifurcation phenomenon occurs under certain conditions and it occurs at the tangent point of the characteristic curve of the system. 結(jié)果表明：在一定條件下，低干度自然循環(huán)兩相流動系統(tǒng)存在靜態(tài)分岔現(xiàn)象，靜態(tài)分岔點出現(xiàn)在特征曲線的切點上；