清华大学汽车碰撞实验室利用橡皮绳弹射加速试验车进行碰撞试验。
By forecasting the length of the elastic rope with linear regression anslysis, test vehicle′s speed can be controlled acctrately.
在回归分析和实验室加速碳化试验的基础上，给出了干旱地区桥梁混凝土强度和保护层厚度的合理取值。
The reasonable depth of concrete cover and concrete strength of railway bridges suitable for arid regions is given through regressive analysis.
目前，评价材料耐候性的试验技术主要有自然环境试验、自然环境加速试验和实验室加速试验3种方法。
Currently, 3 test methods, including the natural environmental testing, the natural accelerated testing and the laboratory accelerated testing, are used to evaluate materials durability.
目前，评价材料耐候性的试验技术主要有自然环境试验、自然环境加速试验和实验室加速试验3种方法。
Currently, 3 test methods, including the natural environmental testing, the natural accelerated testing and the laboratory accelerated testing, are used to evaluate materials durability.
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