cda continuous descent approach
Cda连续下降进近
以上为机器翻译结果，长、整句建议使用 人工翻译 。
NextGen will allow planes to make what is called a continuous-descent approach (CDA), essentially letting them turn off their engines, saving tons of fuel and reducing pollutants.
次世代可允许飞机采取被称国持续降落进场（CDA）的动作，从而事实上关闭引擎，节约燃料，减少污染物排放。
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