ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.
横
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。
ROLL is the instantaneous value of the angle between the reference plane and the horizontal, measured in an athwartship vertical plane.
横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。
明：
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容亦不代本软件的观点；若发现问题，欢迎向我们指正。
