plane of reference

• 基础面,参考面

plane of reference的用法和样例：

例句

1. ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.
   横摇以从左到右通过舰身的垂直面，量度参考面与水平面之间所形成的即时角度。