trunnion axis

• 水平轴,枢轴

trunnion axis的用法和样例：

例句

1. The line of sight must be approximately perpendicular to the horizontal axis.
   视线必须近似地垂直于水平轴。
2. Moving the elevators out of their faired position causes the airplane to change the pitch attitude about the lateral axis.
   移动升降舵离开它们的流线型位置，使得飞机改变水平轴上的俯仰姿态。