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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Exaggerated sections distort the shapes of folds as well as bed thickness.

比例放大的剖面歪曲褶皱的形态和岩层厚度。

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The main factors of influencing coal-bed gas production are permeability, thickness, and gas-bearing volume of the coal-bed.

影响煤层气产量的主要因素是煤层渗透率、煤层厚度及含气量。

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So by firing radio pulses through the overlying sheet and recording the return echoes, scientists can plot both the depth of the rock bed and - by definition - the thickness of the ice covering.

BBC: Antarctic ice volume measured