The glaciers could be retreating because of one of the countless naturaloscillations in the climate that scientists do not properly understand.
冰川的缩小,可能是缘于气候科学家们尚未真正搞懂的无数自然振荡中的一种。
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If the frequency of oil-pressure pulsation is near to power system naturaloscillations frequency, power system low frequency oscillations of resonance mechanism can be induced.