... 垂线 perpendicular 垂线长度 length of perpendicular 垂线章动 nutation of vertical ...
双语例句
1
That means a vector that is at every point of the curve perpendicular to the curve and has length one.
也就是，曲线每一点上,垂直于曲线，模长为1的向量。
2
On each floor, the departments are distributed in the direction perpendicular to the lengthof the building.
各个部门在每一层都是垂直于建筑物的长度而分布的。
3
The three antennas which receive VHF impulses emitted by a lightning discharge are placed on the vertices of a right-angled isosceles triangle with perpendicular sides 120 meters in length.