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These change characteristics were related mainly to the topography, land use, surface run-off and drainage characteristics of the controlled areas.
这种变化特征主要与控制小区地形、土地利用、地表径流和水系特征有关。
TEM observation revealed that the changes in micro-hardness of micro-areas across the weld are mainly related with the precipitate evolution during the aging process.
透射电镜观察表明，焊接接头各微区的显微硬度变化主要与时效强化相的析出行为有关。
In addition to a tectonic factor in a few subsidence areas, the causes of the ground subsidence of Hebei plain are mainly related to concentrated over-extraction of ground water.
河北平原地面沉降的原因，除少数有构造运动的因素以外，绝大多数都是集中过量开采地下水造成的。
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