为了计算周期结构包层多孔光纤的等效阶跃折射率，采用了全矢量基本空间充填模式法。
In order to calculate the equivalent step index of the periodic structure of the cladding holey optical fiber, all-vectorial fundamental space filling mode approach was utilized.
建立了充填国产s101钒催化剂的、单段流向变换周期操作固定床反应器的非均相动态模型。
The heterogeneous transient model of a fixed - bed reactor packed with vanadium catalyst, S101, for catalytic oxidation of SO2 and operating in a flow direction switched periodically was developed.
气候条件的周期性变化可引起湖平面、沉积物供给和沉积物类型的变化，从而控制湖盆沉积充填和湖平面的变化。
Cyclical changes in climate conditions could cause the changes of lake level, sediment supply and sedimentation types, then impact the lake basin deposit and the lake level fluctuation.
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