最小值

In order to obtain the global best result, the starting point is chosen at random and rotatively in the feasible region, and the optimization toolbox of MATLAB is employed. Then the minimum is searched again and by means of some rotations the global heat result is achieved.

为获得全局最优解，提出了在可行域内随机循环给定初始点，采用MATLAB工具箱优化计算，在优化结果中二次搜索极小值的方法，经过少量循环即可求得全局最优解。

Outburst measures;to expose coal;drill field drilling design;minimum control;optimal parameters of evaluation

防突措施；揭煤；钻场钻孔设计；最小控制范围；最优求值参数

The effects of strain rate on plastic formation and dynamic recrystallization of 7050 aluminum alloy were discussed. The results show that the deformation of the specimen is inhomogeneous, and the effective strain in the center of the specimen is maximum. The deformation inhomogeneity increases with the increase of strain rate. The effective stress of specimen is inhomogeneous. As the strain rate increases, the minimum stress value moves from the drum-shaped region to the heart of specimen. The standard deviation of dynamic recrystallization grain size decreases with the increase of strain rate.

模拟结果表明，热变形过程中，试样的各个部位的变形分布不均匀，心部的等效应变最大，变形的不均匀性随应变速率的增大而增大，但是变化的程度不大；试样内部各部位的应力大小分布不均匀，随应变速率的增大，最小应力值由自由变形的鼓形区域逐步向心部移动；动态再结晶晶粒尺寸标准偏差随应变速率的增加而减小。

The minimum airspeed limits given in the handbook are a very good place to start for maximum maneuver limits.

手册上给出的最小空速极限值是可以开始做最大限度机动的要求值。

All the vertices for which the associated value is minimum are considered centroids.

我们要找的其实就是一个结点K，使它所有子树的结点数的最大值最小。

Referring to regular cuboids, two different performance functions are presented for irregular enclosures in this paper. The optimum voltages applied on PZT patches for active noise control are obtained by minimizing two performance functions.

参考长方体封闭空间的情况，本文在不规则封闭空间的有源消声中提出了两种控制目标函数，通过使控制目标函数最小化得到了有源消声控制电压的最优值。

The results show the following meanings. First of all, the population density of plateau pikas reaches maximum in September and decreases minimum in May at research site during the research period.

研究结果表明，研究期间高原鼠兔种群密度在每年9月达到最大值，每年5月种群密度最小。

Fuzzy ratings are made to the three couples of directions by weighted pseudo-distance respectively with consideration of the three key technological factors—undercut、projected area and draw. The optimum parting direction is one which has minimum pseudo distance.

考虑了倒切、投影面积、开模行程这三个关键工艺因素，通过加权伪距离分别对这三对方向模糊评判，选择具有最小伪距离值的方向为最优分型方向。

Conventional tillage with bare ground, conventional tillage with straw incorporated and no-tillage with straw mulch were studied in the Hexi corridor of Gansu provience. The result showed: on summer fallow NTS stored soil water more than CTB and CTS by 30.62mm and 23.91mm, respectively; the winter storage irrigation quotas should be reduced to 900~1350 m^3/hm^2 on winter fallow; evaporation controlling rate arrived 38.1% and 7.3% at winter storage irrigation quotas 975m^3/hm^2 and 2100m^3/hm^2, respectively; NTS did not reduce ET during the spring wheat growth stage; yields different between treatments was not significant.

对甘肃河西内陆河灌区采用常规耕作、秸秆还田和覆盖免耕技术的农田水分效应进行研究，试验结果表明：在夏季休闲期，覆盖免耕比常规耕作和秸秆还田多贮水30.62mm和23.91mm；冬季休闲期可将大定额的储水灌溉减少到975~1350立方公尺/hm^2；覆盖免耕抑制蒸发率在储水定额为975立方公尺/hm^2时达到最大值38.1%，而在2100立方公尺/hm^2时最小为7.3%；覆盖免耕在作物生育期并没有减少土坡耗水量；各处理产量之间没有显著差异。

The widely used method are trial solution and the least square method. They need huge calculations and their results are less reliable. A new kind of intelligent genetic algorithm was employed to get the optimal parameter. Using it in the（ model has proved its reliability for production forecast of oilfield.

各种油气田产量预报模型的应用关键在于参数估计，常规参数估计方法为试凑法和最小二乘法，工作量大，可靠性差，所以引入了一种新型遗传算法求取参数最优估计值，并通过遗传算法在Γ模型中的应用实例说明了该方法在油气产量预报中的可行性。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。