现代代数中使用的十进制源于人类拥有的手指数量，在语言中也存在“five”，“finger”和“fist”的相似现象以及“digit”的双重含义都提供了这样的证据。
The base-ten system used in modern arithmetic originates with the fingers, and linguistic traces of that fact remain in the similarity of "five", "finger" and "fist", and the dual meaning of "digit".
通过代数法得到的相似平台3upu并联机构奇异位置，与用矢量法对一般3upu并联机构所作的分析一致。
The singular position of similar platform 3upu reached by algebraical method is identical to the position of general 3upu analysized by vector method.
香农在1938年意识到该代数的形式和电子开关(这一类开关具有通-断两种状态)的功能的相似性。
Shannon, in 1938, recognized the parallels between this form of algebra and the functioning electrical switching systems, in that switches are two-state, on-and-off devices.
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