Minimum Principle 测定原理 ; 极小原理 ; 最小原理 ; 值原理 design principle 设计原理 ; 设计原则 ; 设计理念 ; 方案 .
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根据正电子湮没寿命实验的结果和总能量极小原理，确定了V和N在V - N -空位复合体中的最佳占据位置。
Optimum location of nitrogen and vanadium in the V-N-vacancy complex is determined, according to the result of the positron annihilation lifetime experiment and minimizing the total energy.
本文介绍了通过在结构单元上增加或者减少不作功的不同约束点，可以改变结构单元应变能的大小的应变能极小原理。
The thesis recommended the theory of minimum strain energy, which says the total structural strain energy can be changed by the increase and decrease of constraint number.
分析了BP算法的基本原理，指出了BP算法具有收敛速度慢、易陷入局部极小点等缺陷以及这些缺陷产生的根源。
Then some defects such as slow convergence rate and getting into local minimum in BP algorithm are pointed out, and the root of the defects is presented.
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