it mean per rate
Rate can mean speed
Means when You rate numbers on people
dilution rate RTU
It means the same rate. Its going/moving at a constant rate.
Lapse rate is the rate at which air temperature decreases with existing altitude
letica
Sounds like it means "unknown rate."
the rate of motion is distance over time
prevailing hotel rate means it is the current rate talking in general.
Literacy rate is the percentage of a population that can read and write.
What means F stamp makeup rate