用逐步回归方法筛选影响空间分量和时间系数的环境和经济因子，组建因子结构模型。
The environmental and economic factors affecting the space component and the time coefficient are sieved by stepwise regression, and factor structure models are established.
湿态环境下平均动摩擦系数降低，但随着压力的增大，这种影响减小。
The humidity results in low friction coefficient, but the braking presure will decrease the effect.
讨论了聚氨酯软泡沫塑料的隔热机理和导热系数计算模型，对影响隔热性能的因素，如温度、密度、挤压、吸水率、环境压力等进行了分析。
The mechanism of transmit heat and the calculation model of the thermal conductivity of the soft polyurethane foam have been discussed and the affect factors of the thermal conductivity.
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