本文对车用风冷发动机汽缸盖的非稳态温度进行了实测，分析了启动、突加和突减三种过渡工况下汽缸盖温度的变化规律。
This paper measured the non steady state temperature field of cylinder head in an air cooled engine. It analysed the temperature variation under transient operating conditions of engine.
建模和计算结果说明利用试验模态参数可以方便地建立轮胎的非稳态模型，并可以直接计算出不同工况下的轮胎动态特性。
Modeling and calculate results show that using experimental modal parameters can easily establish tire properties models and calculated tire dynamic properties under various conditions.
汽车发动机经常在非稳态的过渡工况下工作，即启动、暖机、突加和突减工况。
The automobile engine is usually worked under non steady state of transient operating conditions, i. e. starting, warming, suddenly loading and unloading.
汽车发动机经常在非稳态的过渡工况下工作，即启动、暖机、突加和突减工况。
The automobile engine is usually worked under non steady state of transient operating conditions, i. e. starting, warming, suddenly loading and unloading.
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