The strengthening of the tidal power caused by the significant topographic change is responsible for the rise of the low water levels in the tidal reach.

而河床地形变化引起的三角洲河网区潮汐动力增强，则是感潮河段低水位上升的主要原因。

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Shallow earth temperature is influenced by surface temperature change everyday and every year, topographic change, elevation change and surface feature change, so it should be corrected.

浅层地温受到地表气温的日、年变化、地形变化、高程变化和地貌变化等的影响，应对实测值进行相应校正。

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Maybe they sense slight variations in the rate of change in the magnetic field, much like a hiker reads tightly spaced lines on a topographic map to discern a distinctive canyon.

也许它们感受磁场变化速度的细微变化，就像登山旅行者参照地形图上密密麻麻的线段以辨别一个与众不同的峡谷。

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