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關注:1
2013-05-23 12:21
求翻譯:Let be an oriented rectilinear congruence (short: congruence) of the three dimensional Euclidean space .是什么意思?![]() ![]() Let be an oriented rectilinear congruence (short: congruence) of the three dimensional Euclidean space .
問題補充: |
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