単語を当てクイズ

意味: “Assembly consisting of the principal elements and mechanisms of a watch or clock: the winding and setting mechanism, the mainspring, the train, the escapement, the regulating elements. "Anatomically", the ________ consists of the "ébauche", the regulating elements and the other components.”

1 文字目: M

答え:  

この意味の言葉は何?

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