They include permanent magnets, such as flat magnetic pads and electromagnets of various kinds, such as MRI machines and nerve conduction testing devices.
(They; include; permanent magnets, such as flat magnetic pads and electromagnets of various kinds, such as MRI machines and nerve conduction testing devices)
They
include
permanent magnets, such as flat magnetic pads and electromagnets of various kinds, such as MRI machines and nerve conduction testing devices