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E-61 is a class of espresso machine, defining a standard size and fitting for the portafilter which holds the ground coffee. E-61 is a common standard for commercial espresso machines. The name ''E-61'' comes from the Faema E-61 espresso machine, which was named for the solar eclipse in its year of introduction, 1961. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「E-61」の詳細全文を読む スポンサード リンク
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