law of similarity

On the basis of least square and law of similarity of ventilator, the dimensionless performance curve equations of mine ventilator by operating data are fitted and the characteristic curve equation of mine ventilating network according to its characteristic factors is constructed.

本文运用最小二乘法和通风机的相似定律，用实测数据拟合了矿井通风机无因次性能曲线方程；

Research on Similarity Simulation Experiment of Development Law of Mining-induced Overburden Stress

采动覆岩应力发展规律的相似模拟实验研究

In order to quickly get the decision-making, vector cosine law is used for searching similarity cases. Compared to the use of words searching, it takes more less time to get the most similarity case.

为了快速得出决策，提出利用向量余弦法进行案例的相似度搜索，相比文字查询方法在时间上少了一个数量级。

Research on Similarity Simulation Experiment of Development Law of Mining-induced Overburden Stress Overburden stress is calculated using the density logging data.

采动覆岩应力发展规律的相似模拟实验研究根据岩石密度测井资料计算了各个深度上静负载应力。