| 单词 |
symmetrical alternating quantity |
| 释义 |
symmetrical alternating quantity symmetrical alternating quantity[sə′me·trə·kəl ′ȯl·tər‚nād·iŋ ′kwän·əd·ē] (physics) Alternating quantity of which all values separated by a half period have the same magnitude but opposite sign. |
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