达到极大值 meaning in English

maximizing

In addition , in the austral winter , the westerly jet splits into two branches over the south pacific from 600 to 100hpa , with the subtropical branch located at 27 . 5 s and the polar counterpart at 60 s . the maximal speed of the former is at 200hpa while the speed of the latter increases with height
其次，在南半球冬季， 600 ? 100hpa的南太平洋上空西风急流会出现分裂，其中副热带急流中心位于27 . 5 s ，高纬度急流中心位于60 s ，前者在200hpa层风速达到极大值，后者风速随高度增加而增加。
Value , and the current density and intensity versus the substorm phases . moreover , the characteristics of substorm current wedge are given special attention . it is found that the density and intensity of facs reach their peak during the expansion phase , the onset of the expansion phase is triggered when imf is changed to southward from northward or the southward imf decreases , and the positions of onset are most likely to be at the edge of plasma sheet near the earth
值分布以及场向电流强度和密度随亚暴位相的变化，并着重分析了亚暴电流楔的特征。结果表明，亚暴膨胀相的场向电流强度和密度都达到极大值亚暴的膨胀相是由行星际磁场转向或南向分量变小触发的，其起始位置很可能位于近地等离子体片内边缘。