1.If additional trainer aircraft are needed, the Pentagon plans to redesignate some of its existing rotorcraft rather than buying new airframes.
1.如果需要额外的训练机，五角大
一些现有的旋翼飞机而不是购买新的。
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1.They merged with Boeing and released a new model, the Model 114, which can be considered the ancestor of today's CH-47. In 1962, the HC-1B was redesignated as the CH-47A under the 1962 United States Tri-Service Aircraft designation system.
他们与波
合并， 发布了新型号Model 114，可
认为是今天CH-47的始祖。 1962 
， 
1962 美国三军机命名系统， HC-1B 被重新命名为 CH-47A。机翻
