futtock plates
plural of futtock plate
(mineralogy) A mineral formed by the interaction of guano with calcite and clay at a low pH, believed to be a precursor of apatite.
plural of reactance
(historical) A unit of area equal to 7840 square yards (approximately 0.66 hectares or 1.62 statute acres).
改装の前に、造船職人たちはひび割れや緩んだリベットがないかフットックプレート（複数）を点検した。
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