The porosity test for sandstone was conducted at various temperature level and various effective stress level.
在不同温度水平和不同有效应力水平下，进行了砂岩的孔隙度试验。
On the base of actual bridge observation and test research, this paper discusses the temperature stress effect to concrete box girders which caused by temperature load.
在实桥观测与试验研究的基础上，对温度荷载所产生的温度应力对混凝土箱梁的作用进行了探讨。
By the test of numeric simulation, under various exit velocities the changed rules of stress, temperature and land size about the die are analyzed in this paper.
本文利用数值模拟实验，分析了不同出口速度下的模具应力、模具温度和模具工作带尺寸的变化规律。
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