Approach and Landing Test 与降落测试 ; 逼近与下降测试 ; 与下降测试
take-off and landing test 起飞着陆试验
test landing [航] 试验性着陆
landing gear drop test 起落架落震试验
landing gear warning test button 起落架警告灯检查按钮
Landing doors fire resistance test 电梯入门防火试验
landing gear test 起落架试验
landing page test and optimization 登入网页测试和网站优化
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