quadruplex

/kwod-roo-pleks, kwo-droo-pleks/US // ˈkwɒd rʊˌplɛks, kwɒˈdru plɛks //UK // (ˈkwɒdrʊˌplɛks, kwɒˈdruːplɛks) //

四合院,四联体,四层楼,四合板

Definitions

adj.形容词 adjective

1
- : fourfold; quadruple.
- : noting or pertaining to a system of telegraphy by which four messages may be transmitted simultaneously over one wire or communications channel.

At this juncture other schemes were fermenting in his brain; but the quadruplex engrossed him.
The quadruplex has not as a rule the same working efficiency that four separate wires have.
I had paid for all the experiments on the quadruplex and exhausted the money, and I was again in straits.
For his quadruplex system, Mr. Edison utilized this fact in the construction of a rheostat or resistance box.
Among them was one which was issued some years afterward as Patent No. 480,567, covering his well-known quadruplex.