spread length meaning in English

传播长度
拉距
排列距离

Conventional seismic data processing method uses hyperbolic equation to describe time - distance formula of reflection wave , error of this equation increases with the increase of heterogeneity , anisotropy and spread length
常规地震资料处理方法是利用双曲线方程来描述反射波时距曲线规律，此方程随着地层非均质性、各向异性和排列长度的增加，其误差变大。
The modal analysis result shows that the vertical and horizontal frequencies of dps undeployed are high enough and suffice the dynamic stiffness requested for launching . but the large spread length and light weight effect the low frequency of dbs deployed , so considerations should be taken to the effects of other systems of the satellite . the static analysis result shows that the displacements of the dbs are small under the joint affect of vertical and horizontal loads , and stresses are low , so the stiffness and intensity are good enough
模态分析结果表明伸杆收拢状态的轴向和横向频率都比较高，可满足发射升空时的动刚度要求；静力分析结果表明伸杆结构在卫星处于发射段和上升段时，在轴向和横向过载联合作用下变形均较小，刚度足够；其应力水平亦较低，强度储备较大。