叶片背面有橙色斑点。
果梨形叶片背面浓密灰色的或淡黄灰色被绒毛。
Fruit pyriform; leaf blade abaxially densely gray or yellowish gray tomentose.
植物通过根吸收水分，然后经叶片背面的微小气孔散发至空气中。
Plants take in water through their roots, then release it through small pores on the underside of their leaves.
竿箨耳廓镰刀形，长。沿着中脉的两面的那个或的叶片背面稍具短柔毛。
Culm sheath auricles falcate, long. Leaf blade abaxially minutely pubescent along one or both sides of midrib.
老熟幼虫一般在被害叶片背面或枯叶、叶柄、叶脉及杂草上吐丝做薄茧化蛹，蛹期5 - 15天。
Mature larvae usually leaves the victim or the back of the leaves, petioles, veins and weeds on a thin silk cocoon so pupation, pupal stage 5-15 days.
但是当向前飞行时，它的旋翼将转向直升飞机的前方(如此一来，就变成朝向迎面而来的空气)，经过叶片上方的气流将比经过叶片背面的气流产生更大的升力。
But when flying forward the air passing over the blade that is advancing to the front of the helicopter (and so into oncoming air) provides more lift than the one that is retreating to the back.
背面用灰白色的毛被，叶片基部楔形；花冠。
Leaf blade base cuneate, abaxial surface with gray-white indumentum; corolla magenta-rose.
采用数值模拟的方法，研究了涡轮叶片尾缘斜劈缝气膜冷却的流场特性，及其对叶背面尾缘温度分布的影响。
Numerical methods are used to investigate the film cooling effect of turbine guide vane's trailing edge.
采用数值模拟的方法，研究了涡轮叶片尾缘斜劈缝气膜冷却的流场特性，及其对叶背面尾缘温度分布的影响。
Numerical methods are used to investigate the film cooling effect of turbine guide vane's trailing edge.
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