A section on a log print that gives the scales of the curves displayed and the depth scale. There usually is an insert at the beginning and end of each interval surveyed.

测井打印图上给出显示曲线比例和深度比例的部分，常常在每一个测量层段的开始和结束时都有插图。

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Lines that converge imply depth, scale and distance - a fence or roadway converges into the distance provides the illusion that a flat two-dimensional image has three-dimensional depth.

多个线条的聚合表示深度范围和距离。栅栏或马路向远方的延伸会聚成一点，给人们造成扁平的二维图像有着三维的深度这样的假象。

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Lines that converge imply depth, scale and distance - a fence or roadway converges into the distance provides the illusion that a flat two-dimensional image has three-dimensional depth.

多个线条的聚合表示深度范围和距离。栅栏或马路向远方的延伸会聚成一点，给人们造成扁平的二维图像有着三维的深度这样的假象。

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