concave-upward utility curve [经] 上凹效用曲线
The horizontal and vertical stresses are concave upward in plastic zone.
在塑性区,水平及垂直应力均是上凹的。
Pillow structure consists of a suit of deformed concave upward bodies made of silt and sand whose original layering bent round parallel the basal surface and it truncated at the top surface.
枕状构造是砂层中一组呈“凹”形弯曲的变形沉积体,它的原始层平行于枕状体的底面,顶面则是一个平直的截切面。
A concave-upward, semicircular event in seismic data that has the appearance of a smile and can be caused by poor data migration or migration of noise.
地震剖面上一个向上凹的、半圆形的同相轴,看上去象是微笑的样子,这是由于对含噪音数据或质量差的数据进行偏移引起的。
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