quadruplex

英 ['kwɒdrʊpleks] 美 [kwɑ'drʊplɛks]
  • adj. 四重的；四倍的；四重信号的
  • n. 四路多工系统
quadruplex
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英文词源

quadruplex (adj.)
1875, in reference to telegraph systems in which four messages can be wired simultaneously, from quadru- + plex. In classical Latin, quadruplex meant "fourfold, quadruple," as a noun, "a fourfold amount."