The NDVI had the same characteristics of cycle oscillation as that of runoff.

NDVI与径流量具有同等的周期变化特点。

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This paper presents an approximate analytic method which determines the characteristics of aircraft lateral-directional limit cycle oscillation induced by aerodynamic hysteresis.

本文给出近似解析公式，确定空气动力迟滞引起的飞机横航向极限环振荡特性。

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Before cycle 24 commenced, the position and strength of the torsional oscillation correctly predicted the late arrival of this cycle's sunspot activity.

在第24个周期开始前，人们通过太阳的扭转振动的位置和强度准确的预知了第24周期内太阳黑子活动的推迟。

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"There is other research out there pointing out that this storage may be part of a natural cycle that will eventually reverse, either due to El Nino or the so-called Atlantic Multidecadal Oscillation, and therefore may not imply what the authors are suggesting, " he said.

BBC: Science & Environment