英文: The wall is usually perpendicular.
中文: 墙通常是垂直的。英文: Operators mounted perpendicular to pipe.
中文: 执行机构安装方向与管道垂直。英文: Perpendicular Vegetation Index and Its Solution Method
中文: 垂直植被指数及其解算方法英文: Calculation of perpendicular vegetation index and accuracy
中文: 垂直植被指数的计算和精度分析英文: Are pasterns firm and almost perpendicular to the ground?
中文: 跗关节是否坚固并且几乎垂直地面。