Time series of vertical crustal displacements are obtained by defining a datum of a stable group of 7 stations scattered in different regions with relatively small vertical displacements.
选分布于不同区域相对垂直位移较小的7个站为稳定点组，得到垂直位移时间序列。
Instead of a horizontal and vertical speed achieved with two rotors, the new base stations will use a single rotor with two diagonal sweeps leaning in opposite directions.
新基站将使用于有沿反方向倾斜的两个对焦扫描的单个转子，来代替两个转子的垂直和水平速度。
MARTA's vertical transportation system consists of 112 elevators and 149 escalators primarily located at 38 transit stations, as well as other support facilities.
MARTA的垂直运输系统包括112台电梯和149部手动扶梯，主要分布在38个运输站点，以及其它支持设施里。
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