侧生器官沿茎轴呈笔直纵行排列的状态称为叠积。在轮生、对生、互生的叶序中都有这种现象。
矿源层为中三叠统浊积岩。
结果表明，弯曲叶片性能不仅与叶片两端部的弯曲角度有关，也与积叠线的形状和长度有关。
The results show that the performance of curved blade is influenced not only by the end Angle, but also by the shape and length of the stacking line.
本文采用拟压缩性方法对不同积叠线弯曲叶片压气机叶栅内三维粘性流场进行了数值模拟。
The numerical simulation has been carried out to investigate the three dimensional viscosity flow in the compressor cascades with curved blades of different types of stacking lines.
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