The FTIR analysis of surfaces of tested anthracites suggests that the induced modification is time dependent and can not permanently change the surface microstructure.

开展了改性前后煤表面的傅立叶红外光谱分析，结果证明，煤表面电磁改性具有时间效应，电磁场不能永久地改变煤的内部基团微观结构。

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Prediction of resistance deterioration is an important part of time-dependent reliability analysis of cable-stayed bridge.

分析斜拉桥结构动态可靠度时，目前抗力衰减预测的基本模型经验性都很大，对具体结构并不一定适用。

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For the model with time-dependent birth pulses, using the stroboscopic map, the theory on bifurcation and numerical analysis, the existence and stability of the positive equilibrium are obtained.

对具有密度依赖生育脉冲的模型，运用频闪映射，结合分支理论和数值分析，得到了正平衡态的存在性、稳定性；

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