The BIPM could not vote on an SI unit without reference points.
novelstar:)
Temperature is a measure of the warmth or coldness of an object or substance with reference to some standard value. The temperature of two systems is the same when the systems are in thermal equilibrium.
the temperature at which a chemical changes from a liquid to a gas
define the width of runway strips for aerodrome reference code?4E
Happiness is difficult to define because each individual may feel different in what happiness means in their lives and some individuals are blind to the happiness they do experience. Without sadness or even some depression or general difficult times in ones life then they will never know what happiness truly is.
The term
define difficult
You need to define "your". Without knowing who (or what country) this question is referring to, it's difficult to supply a proper answer.
This is a reference dimension. I.e. the part can and should be manufactured without using it directly. The non-bracketed dimensions should define the form of the part completely.
A+ answer reference group
difficult to understand; enigmatic
reaction against
It's not