Probing the realization way of travelling wave into the stator of motor, proving the surface of motor stator particle existence oval of sport at the wave.
探讨了电机定子面内行波的实现途径，从理论上证明了面内行波时电机定子表面质点椭圆运动的存在。
The spore is oval and has a warty surface.
孢子呈椭圆形，表面呈不规则突起、疣状。
Taishan Walnut adaptability, fruit oval, surface smooth, a big uniform, thin flesh, shelling percentage of 40% or more.
泰山核桃适应性强，果型椭圆，表面光滑，个大均匀，皮薄肉厚，出仁率在40%以上。
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