以外力地质作用、困难度指数和地表切割密度作为公路地貌二级区划的主导指标；
Based on those works, the index system of landform regionalization of highway in China was developed.
如果lgA 指数突然下降到某一水平以下，训练就会降低难度或完全取消。
If lgA levels suddenly fall below a certain level, training is eased or dropped altogether.
随着机器人规模的线性增加，它的花费和难度都成指数增加。
As the size of a robot increases linearly, the cost and difficulty to make it increases exponentially.
随着所考虑的城市数量的增加，这个难题的难度将呈指数式增加。
This is a puzzle that increases exponentially in complexity with the number of cities considered.
由于采用的是最自然的指数曲线，所以我们的线路可以不需要高线性度的元件，因而降低了设计上的难度。
By utilizing the inherent exponential curves, high-linearity components are not necessarily required and the design efforts are relaxed.
由于采用的是最自然的指数曲线，所以我们的线路可以不需要高线性度的元件，因而降低了设计上的难度。
By utilizing the inherent exponential curves, high-linearity components are not necessarily required and the design efforts are relaxed.
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