等面叶是指叶肉组织比较均一，不分化成栅栏组织和海绵组织或虽有分化但栅栏组织却分布在叶的两面的植物叶子。
叶片都包括表皮、叶肉和叶脉，且为等面叶。
The leaf blade consists of epidermis, mesophyll and vein, which is iso-bilateral leaf.
优化实例结果显示：某高压涡轮导叶等熵效率从93．88％提高到94．94％，局部区域流动情况得到较大改善，型面匹配更加合理。
The optimization results show that the efficiency changes from 93.88% to 94.94%. Flow situation in several local zones is improved and profile surface matching results are more reasonable.
为校验所用S2 正问题计算和S1流面计算程序，对设计状态进行了S2 正问题计算、S1流面计算及FLUENT 计算，总参数如流量、效率等吻合较好，叶表马赫数分布趋势也很相似。
Comparison between S2 calculation, S1 calculation and FLUENT calculation illustrated that the mass flow and efficiency tally well, so does the distribution of mach number along the blade surface.
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