结果眼内压及近视力在卧床期间呈波动下降趋势，两者间存在一定相关性；
Result Intra ocular pressure and near vision showed a wavelike decrease change during bed rest, and there exists a certain coherence between them.
研究表明，南极大陆海岸带地区积雪覆盖面积总体上呈波动下降趋势，暖季比寒季波动显著。
The result showed that the change of snow cover area was in a fluctuant downward trend on a whole, and was more marked in warm season than in cold season.
结果表明，中国北方沙尘暴发生日数在195 4～ 2 0 0 1年呈波动下降的趋势，春季下降趋势最明显。
The results show that days with duststorm had been fluctuant decreasing during 1954—2001, especially in spring.
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