求翻译：（4）.加权平均旅行时间并未体现吉林省中部城市群城市间可达性改善状况，但东北振兴战略实施前后各城市经济潜力值变化较大，其可达性增加率均在175%上下，吉林省中部城市群空间极化现象得到进一步提升。是什么意思？

( 4 ) The weighted average travel time does not reflect the central city of Jilin Province to improve the situation between the accessibility of the city, but before and after the implementation of the strategy to revitalize northeast economic potential value changes in the larger cities , which inc

(4) the weighted average travel time, and does not reflect jilin city group of central city-to-be-up to improve the situation, but Revitalizing northeast China strategy before and after the implementation of urban economic potential change in the value is large, it may be up to increase rate are 175

The (4). weighted average travel time manifests middle by no means Jilin Province the urban cluster interurban accessibility improvement condition, but around the northeast promotion strategy implementation various urban economy potential value change is big, its accessibility increment about 175%,

(4). weighted average travel time is not reflected in Jilin city between central cities, accessibility improvements, but before and after implementation of the urban economic revitalization of Northeast China potential value varies widely, the accessibility rate of increase in 175%, Central Jilin ur

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