The mechanics take off the hubcap and reduce the tire pressure from 200 to 30 psi, which reduces the risk of it exploding as the bolts and nuts holding it on the plane are removed.

机修工们取下轮毂盖，把轮胎压强从两百降低到三十磅，这样当固定在飞机上的螺栓和螺母被取下时，就可以降低其爆炸的风险。