For a gas well the flow versus the differenceof the squares of the average reservoir and wellbore pressures are plotted on log-log paper.
对于气井，在双对数坐标纸上绘出流量对平均储层压力与井筒压力平方差的关系图。
2
In this paper, we investigate the Constrained Weighted Least Squares (CWLS) algorithms for Time Differenceof Arrival (TDOA) based mobile user location in wireless communication systems.
本文主要对无线定位中基于TDOA的一种约束加权最小二乘算法进行了研究。
3
According to the shifted distance and the phase increment, the mapping relationship between phase difference and depth of object can be determined by a least squares method.