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countable and uncountable, plural pearlites
A two-phased lamellar structure composed of alternating layers of alpha ferrite and cementite that occurs in some steels and cast irons, having a pearlescent appearance. examples
(mineralogy) Alternative form of perlite quotations examples
[…] inclosing great masses of pearlite and felspar.
1835, British Association for the Advancement of Science, (Please provide the book title or journal name)