这是一种被数学家称为从局部最大值探索整体最大值的方法，而一路上会有很多无意义最小值。
The way to get from what the mathematicians call a local maximum to the global maximum is to explore a lot of fruitless minima along the way.
装配式、整体式隧道横向变形处于弹性极限破坏状态，管片环横截面极限半径最大值、最小值。
The transverse deformation of entiretied and constructed tunnel are both in the elastic limit corruptstate, the solution of the maximum and minimum of the segments'cross-section radius.
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