求翻译：以低频振荡的能量与总能量的百分比作为低频振荡强度指数,初步研究了热带地区低频振荡强度的年际变化及其对中国东部冬季降水的影响是什么意思？

Low-frequency oscillations in energy and total energy intensity as a percentage of low-frequency oscillation index, a preliminary study of the intensity of tropical low-frequency oscillation and its interannual variations in winter precipitation in eastern China

With a low-frequency oscillations of energy and total energy than the 100% as a low-frequency oscillator Strength Index preliminary study of the tropical regions, low-frequency oscillator strength of inter-annual variability and its impact on China's eastern winter precipitation

Takes the low frequency vibration intensity index by low frequency vibration energy and the total energy percentage, preliminary study tropics area low frequency vibration intensity year border change and to east China winter precipitation influence

To low frequency oscillation energy and total percentages as low frequency oscillation energy intensity index, study on tropical low frequency oscillation strength of Interannual variability and impacts on winter precipitation in Eastern China

Low-frequency oscillations in energy and total energy intensity as a percentage of low-frequency oscillation index, a preliminary study of the intensity of tropical low-frequency oscillation and its interannual variations in winter precipitation in eastern China