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quadruplex    
n. 四工

四工

quadruplex
四工的; 四重的; 四倍的; 四路多工的 QUAD

quadruplex
四工

quadruplex
adj 1: having four units or components; "quadruple rhythm has
four beats per measure"; "quadruplex wire" [synonym:
{quadruple}, {quadruplicate}, {quadruplex}, {fourfold},
{four-fold}]

Quadruplex \Quad"ru*plex\, a. [L., from quattuor four plicare
to fold.]
Fourfold; folded or doubled twice.
[1913 Webster]

{Quadruplex system} (Electric Telegraph), a system by which
four messages, two in each direction, may be sent
simultaneously over the wire.
[1913 Webster]


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