Email format error
Email cannot be empty
Email already exists
6-20 characters(letters plus numbers only)
The password is inconsistent
Email format error
Email cannot be empty
Email does not exist
6-20 characters(letters plus numbers only)
The password is inconsistent
A piston is a mechanical device designed to move up and down in order to compress gas, creating pressure. This pressure creates heat, which is then used to produce mechanical work.