本文对该矿区的沉陷特征进行了论述，探讨了其形成原因，并对其稳定趋势进行了分析。
The formation of the subsidence is discussed, and the stability trend is analyzed in the paper.
使用时间图表——根据时间所有这些量度都可以画为图表趋势，例如，应该积极地调查表示修复缺陷工作稳定增长的趋势。
Using time charts — All these metrics can be plotted against time to chart trends. For instance, a trend showing a steady increase in effort to fix defects should be vigorously investigated.
图9和图10演示了自由堆空间中的稳定和递减的趋势。
Figures 9 and 10 illustrate stable and downward trends in free heap space.
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