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.
These kinds of problems are more likely to occur when a person with APD is in a noisy environment or when he or she is listening to complex information. APD goes by many other names. Sometimes it is referred to as central auditory processing disorder (CAPD).Other common names are auditory perception problem, auditory comprehension deficit, central auditory dysfunction, central deafness, and so-called word deafness..uditory processing is a term used to describe what happens when your brain recognizes and interprets the sounds around you. Humans hear when energy that we recognize as sound travels through the ear and is changed into electrical information that can be interpreted by the brain.