| 单词 | double algebra |
| 释义 | > as lemmasdouble algebra double algebra n. algebra which deals with two sets of quantities or relations (e.g. real and imaginary quantities, lengths and directions of lines, or quantities referred to two independent units). ΚΠ 1849 A. De Morgan Trigonometry & Double Algebra v. 117 All the symbols which in single algebra denote numbers or magnitudes, in double algebra denote lines, and not merely the lengths of lines, but their directions. < as lemmas |
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