The results thus obtained are:1) The ultra-long waves at 500rob level show remarkable seasonal variations, whose spectra in dry years are distinctly different from those in wet years;
分析结果表明:(1) 500毫巴月平均高度场上的超长波有着明显的季节变化特征,旱涝年的波谱特征有显著差异;
The results showed that the average disease levels were significantly different between years, while the borer level was not significantly different;
结果表明,不同年份间的平均病害级别差异显著,而玉米螟的食叶级别却不存在显著差异;
The relative sea level will rise in tens of future years but there will be different degree in different areas.
因此,充分认识相对海平面上升将导致的危害就显得极为重要和迫切。
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