When the bond between bolt and grout is intact the shear stress distribution of the bolt side is described by exponentcurve.
当锚杆与砂浆的粘结未破坏时，以指数曲线来描述锚杆的侧剪应力分布；
2
Because it is very difficult to realize a frequency pattern as exponentcurve rising and inverse exponentcurve falling by a common hardware logical combination, so it is achieved by software.
以软件方式实现一般硬件组合逻辑难以达到的指数曲线升频和逆指数曲线降频规律。
3
The essence of the gray prediction model is to fit the known data sequence with an exponent form to a curve, and then extend the curve to the future in order to predict the unknown data.