Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
관성유도 시스템은 비행기의 경로를 자동으로 조정합니다.gwanseongyudo siseutemeun bihaenggaui gyeongroreul jadong-euro jojeonghamnida.The inertia guidance system automatically adjusts the aircraft's trajectory.