unbelted

adj.

无带的，无腰带（或皮带）的；

Ammunition magazine for unbelted ammunition
Belted and unbelted driver accident involvement rates compared ☆
Influence of the unbelted rear-seat passenger on driver mortality: "the backseat bullet".
Neck injuries among belted and unbelted occupants of the front seat of cars
SAFETY ASSESSMENT OF POST IMPACT BRAKING ON BELTED AND UNBELTED OCCUPANTS
Risk of injury for occupants of motor vehicle collisions from unbelted occupants.
Mortality of front-seat occupants attributable to unbelted rear-seat passengers in car crashes.
The influence of increased roof strength on belted and unbelted dummies in rollover and drop tests
Patterns of injury in belted and unbelted individuals presenting to a trauma center after motor vehicle crash: seat belt syndrome re...
Thoracolumbar junction injuries after rollover crashes: difference between belted and unbelted front seat occupants