A stroke that lands above the center of a ball, as in golf or tennis, giving it a forward spin.
上部击球是击在球中心以上的抽球，从而使球向前旋转，这种手法常用在高尔夫或网球中。
Based on the model which was put forward by SANCHEZ, the stochastic resonance phenomena in the field-driven and spin-like model on Small-World network with directed links were investigated.
基于SANCHEZ提出的有向的小世界类自旋网络模型，研究了引入周期性磁场驱动后所引起的相变特征。
If you were able to look down on a tango dance floor, you'd see dancers move as if floating down a river-flowing smoothly forward sometimes and occasionally stopping for a spin in a shallow eddy.
如果从空中俯视探戈舞池，你会看到舞者们的移动就像顺着河水的走向，顺流而下。有时顺畅的向前，有时会因一个浅涡而停住。
A simple proof of six invariants under the transformation of spin axis is put forward.
给出了二次曲面在转轴变换下的六个不变量的简易证明。
Finally, spin relaxation of polarized atom due to spin-exchange collisions and spin-destruction collisions is put forward.
最后，提出了因自旋交换碰撞和自旋销毁碰撞引起的极化原子的自旋弛豫。
In chapter IV, the characteristic of spin target's one-dimension range-profile and the influence which bring to ISAR imaging is reached. Then corresponding compensation method is brought forward.
第四章研究了自旋运动目标一维距离像的特点以及对ISAR成像的影响，提出了相应的补偿方法。
In chapter IV, the characteristic of spin target's one-dimension range-profile and the influence which bring to ISAR imaging is reached. Then corresponding compensation method is brought forward.
第四章研究了自旋运动目标一维距离像的特点以及对ISAR成像的影响，提出了相应的补偿方法。
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