Can some me and tell me the definition of these word i hope can some : hydraulics: hydrometer : laminar flow: newtonian fluid: non-newtonian fluid: pascal's law: i need i hope can some one in science

Hydraulics- associated with the convenience of liquids through pipes. 
Hydrometer- instrument that measures the density of liquids to water.

Laminar flow- occurs when fluid flows in parallel layers. 

Newtonian fluid- rate changes over time; fluid which the stresses arise from its flow at every point, are linearly proportional to the strain rate.

NON-Newtonian fluid- dependent on sheer rate; sheer rate history. Does NOT follow Newtons law of Viscosity. 

Pascal's law: states any pressure applied to an enclosed fluid system will transmit pressure equally in all directions of fluid. 

I really hope this helps!