Since we don t have a complete understanding of string theory, it s impossible to rule out all possible models that are based on strings, said Rothstein.
罗斯丁说，“由于我们没有完全理解弦理论，因此不能排除基于弦的各种可能模式。”
First, neural networks, mathematical models and rule models are constructed based on statistical data and empirical knowledge.
首先基于统计数据和经验知识，建立神经网络，数学模型和规则模型。
Based on the pavement mechanics models, fatigue cracking theory of fracture mechanics was used to investigate the rule of reflection cracking.
基于选定的路面力学模型，采用断裂力学中的疲劳裂缝扩展理论对路面反射裂缝的扩展规律进行分析。
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