Test results show that spur dikes aligned along a single bank in the deep water zone have more effects on the adjustment of the bed topography of the wide-shallow river than in the shallow water zone;

试验结果表明，在深水区的单侧丁坝群对宽浅河床地形的调整作用大于浅水区；

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The glacier incurs stresses due to the change in the bed-rock topography it flows over, the lack of pressure in front of it and the reduction in thickness at the front.

由于它经过的床岩地势变化，以及它的前部缺乏压力，厚度缩小，冰川遭受到压力。

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But where the topography is changed during the construction of road bed, the method could not be used directly in the second road bed lofting from the design variation.

但在路基施工地形改变后，由于设计变更而进行的二次路基放样中，逐点接近法则不能得到直接利用。

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