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 discrimination refers to the brain 's ability to organize and make sense of language sounds. Children who have difficulties with this might have trouble understanding and developing language skills because their brains either misinterpret language sounds, or process them too slowly.hildren with auditory disabilities may fall behind classmates in learning how to read. Children who have difficulties with auditory discrimination may also have trouble reading. Problems relating to auditory discrimination are usually related to the brain, rather than the ears.