prim - raci
- primacord
- primal sketch
- primary
- primary (coolant )flow
- primary (coolant )flow
- primary (phase )factor
- primary (phase )factor
- primary (standards )laboratory
- primary (standards )laboratory
- primary accelerator
- primary air
- primary air cleaner
- primary air cleaner element
- primary alcohols
- primary amino group
- primary anion unit
- primary area
- primary battery
- primary beam
- primary blasting
- primary block
- primary boiler-feed pump
- primary brake shoe
- primary braking system
- primary breaking
- primary burner
- primary cable
- primary calibration
- primary calibration point
- primary carbonization
- primary cell
- primary cell capacity
- primary cementing
- primary channel
- primary charge
- primary chemistry
- primary circuit
- primary circuit pump
- primary clock
- primary coil
