1. Nothing can be done if the optical tube is not perpendicular to the declination axis or if the R. A. and Dec axes are not perpendicular, because these problems are next to impossible to fix. 但没有避光学镜筒没有垂直于赤纬轴，或是赤纬轴与赤经轴没有互相垂直更糟的情况，因为这需问题会导致根本无法固定住要观测的目标。
2. According to the influence of the perpendicular direction magnetic field upon the optical magnetic resonance signal, the perpendicular terrestrial magnetic field are measured. 文章根据垂直方向磁场对光泵磁共振信号的影响，来测定地球磁场的垂直分量的大小。
3. A perpendicular, especially a perpendicular to a line tangent to a plane curve or to a plane tangent to a space curve. 属于、关于一个切线或切（面），沿着或向着一个切线（或切面）的方向移动。
4. Other late Gothic styles include the British Perpendicular style and the French and Spanish Flamboyant style. 其它哥德式晚期风格包括英国的垂直式风格和法国、西班牙的火焰式风格。
5. Perpendicular style: Phase of late Gothic architecture in England roughly parallel in time to the French Flamboyant style. 垂直式风格：英格兰晚期哥德式建筑的一个阶段，在时间上约略与法国的火焰式风格相平行。
