Tin, lead and their alloys, due to their low melting temperatures and wide availability, are the most commonly used solder materials. In fact, lead has been used as a soldering metal for water pipes (also made of lead) even in Roman times, hence the scientific name for lead, Plumbum. Mechanical Properties.
hearing impairment - impairment of the sense of hearing. hearing disorder. disability, disablement, handicap, impairment - the condition of being unable to perform as a consequence of physical or mental unfitness; reading disability; hearing impairment. deafness, hearing loss - partial or complete loss of hearing.
Auditory neuropathy is a hearing disorder where the sending of signals to the brain from the inner ear is impaired. It can affect someone from birth, and it can also develop later on in life, in childhood or adulthood.osted on: Wednesday, December 4, 2013 by james robins. Auditory neuropathy is a hearing disorder which causes people to experience hearing loss as well as difficulties distinguishing speech from other sound.