采用格兰杰因果分析法，依据需求拉动和技术推动理论，对中国技术交易规模扩张的原因进行了实证检验。
It is applies Granger causality tests to test the causes of China technology markets growth according to technology demand pull and technology push theories.
接着本文详细介绍了生化分析仪的理论依据即布格一朗伯一比尔定律以及分光光度计的组成。
Following, this text introduce biochemical theoretical foundation which is called Bouguer-Lambert-Beer low and composition of spectrophotometer.
依据大变形理论和虚功原理对高速切削过程进行分析，建立了基于拉格朗日描述的有限元控制方程并采用二维有限元模型进行模拟。
Large deformation theory and virtual work principle were applied to analyses high - speed machining process, the finite element governing equation was approached based on Lagrangian description.
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