If you're referring to air brake systems, primary air supplies service air pressure to the brakes on the drive axles and the trailer axles when the foot valve is used to brake. The secondary air system supplies service pressure to the brake system on the steer axle, as well as the trailer when the hand valve is used to apply the trailer brakes.
Secondry
primary secondry tertiary jobs in Barcelona?
U can pick 2 primary skills and as many secondry skills u like. Primary include: (Minning, skinning) Secondry include: (First aid)
yes it is because there have more primary exports than secondry
2011: 10.1% primary, 46.8 secondary, 43.1 tertiary
25% primary 35% secondry 40% thertiary
240 / 12 = 20
ratio of secondry voltage to primary voltage is called voltage transformation ratio
no becouse transformer function depends on no of coil in primary and secondry coil
primary consumers. producers make their own food.
because it forms a layer b/w primary and secondry wall...
A primary battery is the first used, most common battery, the secondary battery would be like a back up battery, or a battery that is used less.