The necesary resource is very avaidable, becouse is around us
You can compress the necesary resource
You can't compress the resource that you need for this
The operating enviroment is safe and clean
It has a complex piping system
It doesn't have an automatic response
It works with compressed air
Many machines worck with it, pistons, for example
It has a simple piping complexity
It has fire risks, and the operating envroment is not very safe
It uses a liquid or fluids as a mode of transmission of the pressure.
The main resource you need is not unlimited and isn't free
It has much more force than compressed air
It has a great precision
It doesn't have a lot of precision
It has a response inmediatly