striking plates
plural of striking plate
(originally US) A person hired to carry out errands or (often) menial tasks, frequently requiring travel from place to place; an errand boy or errand girl, a runner.
plural of Orbach
(informal) A large amount.
技術者は摩耗した打撃用プレートを交換して、機械のタイミングと音を回復させた。
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