They believe that the frequent fluctuation of nominal and real exchange rates under the floating exchange rate regime will inevitably lead to the reduction in the volume of international trade.

他们认为，浮动汇率制度下名义汇率和实际汇率的频繁波动将不可避免地导致国际贸易量的减少。

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The model overcomes the unpredictability due to monotonicity and periodical fluctuation of freight volume.

该模型克服了货运量的单调性和周期波动性给预测带来的困难。

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Experimental results show that lead-free solder paste in the poor mobility of steel line, resulting in deposition area, volume and height of the maximum and minimum fluctuation is obvious;

实验表明，无铅锡膏在钢网上的流动性很差，导致沉积面积，体积和高度的最大值和最小值的波动变化十分明显；

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