The inherency frequency and vibratory-type are calculated based on the modal analysis of the whole airframe.
对整体框架进行模态分析,求固有频率和振型。
The inherency frequency and vibratory-type are calculated based on the modal analysis of the whole airframe.
对整体框架进行模态分析,求固有频率和振型。
If additional trainer aircraft are needed, the Pentagon plans to redesignate some of its existing rotorcraft rather than buying new airframes.
如果需要额外训练,五角大楼计划再指派一些现有旋翼而不是购买新。
Included in the transaction are three nonflying TP-3A aircraft to used as airframe spares and extra T-56 engines to support the 12 flyable aircraft.
交易包括三架不能TP-3A进行备用,以及额外T-56发动以支持12架可驾驶。
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