赫尔曼·霍尔瑞斯发明穿孔卡片制表机。
观察人员被告知要待在房间里用绿色胶带标出的那一边,距离制表机几英尺远的地方。
Observers were told to stay several feet away from the tabulators, on one side of the room marked off by green tape.
观察人员被告知要待在房间里用绿色胶带标出的那一边,距离制表机几英尺远的地方。
Observers were told to stay several feet away from the tabulators, on one side of the room marked off by green tape.
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