Why are the windows of airplane (aircraft) oval?
When traveling abroad and taking an airplane (aircraft), I often feel puzzled. Why are the cabin windows all small and oval in shape?
Tagged: Safety
Warm bag, arms stove can take the plane to travel abroad?
The problem of keeping warm in winter today is about "disposable warm bags and can be repeated use of rechargeable warm bags, white Jin Hui and other warm items can take the plane to travel abroad?"」