Prices fluctuate, in response to harvests, natural disasters and political instability; and when they rise, it takes some time before new sources of supply become available.
价格会随着收成、自然灾害和政治不稳定而波动；当价格上涨时，需要一段时间才能找到新的供应来源。
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The exhaust gas temperatures rise and variation during EUIII test cycle and its impact on the light-off time, ceramic temperature, dynamic response behavior and emission results were studied.
In this paper the relationship between the elastic and inelastic seismic displacement responses of high-rise buildings is studied by time history response analysis.