由于太阳活动的正常消长变化没能完全符合我们过去预计的周期，最近几年许多人太阳内部动态活动的课题产生了浓厚的兴趣。
The sun's internal dynamics were the subject of intense interest over the last few years as the normal waxing and waning of solar activity did not follow past cycles as closely as anticipated.
叶面积消长动态符合一元二次方程变化曲线；
The dynamics of leaf area accorded with the curves of second-order equation.
运用常规石蜡制片法，在光学水平观察了淀粉在大麦胚珠发育中的消长动态。
Based on the conventional paraffin sectioning method, observation was done at the optical level on the dynamics of starch during the ovular development in barley.
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