我们已经注意到，它关系到滚转刚度和飞机保持两个机翼在水平位置飞行的趋势。
We have already noted its relation to roll stiffness and to the tendency of airplanes to fly with wings level.
当航速为零时，则是通过鳍在水平位置附近的上下振动来产生升力，与鸟类和昆虫的扑翼飞行相似。
When the speed of AUV is zero or low speed, lift is produced by the vibration of fin stabilizer at the horizontal position, which is similar to the flapping wing flight of insects and birds.
建筑的墙壁和地板被称为嵌板，是在水平或垂直的位置铸造的。
The walls and floors of the building, called panels, are cast in a horizontal or vertical position.
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