The computations are relatively straightforward, but they must be able to cope with all conceivable geometric situations, including vertical lines, parallel lines, and so on.
计算是相对地直接的，但他们必须能应付以所有可以想像的几何学情况，包括垂直线，平行的线，等等。
2
Total Vertical Error (TVE) : Verticalgeometric difference between barometric altitude in actual flight of aircraft and designated barometric altitude (flight level).
总垂直误差(TVE)：航空器实际飞行的气压高度和指定的气压高度(飞行高度层)之间的垂直几何差值。
3
Seismic response of chimneys to combined horizontal and vertical ground motion is analysed in this paper. The effect of the geometric nonlinearity including vertical ground motion is considered.