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1·Body weight of the three ducks during the wintering season showed a fluctuating variation of two low and two high peaks.

三种野鸭越冬期体重呈现出二低二高的变化形式。

2·Instability variation of prestressed force will influence the security of the project, so it is very important to study the fluctuating variation of the force.

预应力的不稳定变化关系到工程运营期的安全性，因而，研究锚固力的波动变化显得非常重要。

3·The design and construction of pre-stressed anchor will influence the security of the project, and it is very important to study the fluctuating variation of the stress.

但预应力的不稳定变化关系到工程运营期的安全性，因而研究锚固工程的设计施工显得非常重要。

4·The seasonal variation that the organic phosphorus transformation is to present the state of fluctuating.

土壤有机磷转化作用的季节变化是呈波动状态。