1·Artificial meridian is a test apparatus for magnetic effects in airworthiness standards of civil planes.
人工子午线是民用飞机适航性标准中磁影响试验的设备。
2·AIRWORTHINESS, the condition of the aircraft with respect to its aerodynamic, mechanical, and legal ability to fly.
适航性,有关气动能力、机械飞行能力、和合法性的飞机状态。