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1·The cable sag caused by cable dead weight is vertical.

由钢索自重引起的垂度是竖向的。

2·These are prestress in cables, sag of cables, rise of arches, the vertical flexible stiffness of arches and the axial stiffness ratio between the cable and the arch.

这些参数为索预应力、索垂度、拱矢高、拱竖向抗弯刚度以及索和拱的轴向刚度比。

3·The dynamic voltage restorer is designed as unilateral energy flow equipment which can compensate continuous voltage sag or swell resulted from the voltage drop of power cable.

动态电压恢复器采用单向馈能电路结构，可以在能量单向流动的情况下，实现对因电缆压降而产生的电压暂降或暂升的持续补偿。

4·The mechanical calculation of ADSS fiber optic cable is introduced and the calculation formulae for sag, tension, strain and slack length etc are given.

介绍了ADSS光缆的力学计算，给出了光缆弧垂、张力、应变和悬长等计算公式，并对普遍采用的“悬链线”和“抛物线”两种计算方法加以比较。

5·With the fixed stiffness, sag, temperature and so on, survey precision of the tension force of the cable is determined by the sample rate and the sample length of the vibration signal.

在刚度、垂度及温度等边界条件一定的条件下，拉索索力测量精度主要由振动信号数据采集的频率和采样时间决定。