本实用新型是一种画抛物线和双曲线的画图工具。
The relation between the softening factor of the destressed zone and borehole spacing and row spacing is a hyperbolic curve.软化卸压带的软化系数与炮眼间距及排距呈双曲线关系。
The reduction theory for elastic modulus and Poisson's ratio is given according to the stress-strain hyperbolic curve of the soil.根据土的弹性模量和泊松比满足双曲线关系,给出了弹性模量和泊松比折减的基本原理。