roll (drone)

roll-on / roll-off ships (Ro-Ro)

roll-control / roll control

drone war (world’s first drone war)

drone field of view (drone FOV)

drone swarm attack / drone swarming attack

drone swarm's counter-drone capabilities

hobby drone (hobby grade drone)

one-way attack drone (OWA drone)

guerrilla-roll

muster roll

roll motion

roll of honour

roll up

roll up enemy lines

roll up the hostile flanks

roll-fed waterproof paper

roll mat

sleeping mat, roll mat

tank passive pitch and roll damping system

camber roll

crash roll

front roll rate

roll damper

roll control

roll program

roll programmer

roll angle

roll cloud

roll erection

roll-rate gyro

hydraulic roll actuator

roll accelerometer