two-speed
adjective
(of a transmission system) having two settings
(of an economic system) allowing one sector to grow at a faster rate than another
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Examples from the Web for two-speed
Historical Examples of two-speed
This arrangement gives six spindle speeds, and double this number is obtained by using a two-speed countershaft overhead.
Turning and BoringFranklin D. Jones
The gear-ratio of a two-speed gear is the ratio of the high to the low gear.
In some two-speed gears the normal is the high speed, in others the low.
Two-speed and three-speed gears are now very commonly fitted to cycles.
How it WorksArchibald Williams
Fig. 14 is a sectional view of the “Hub” two-speed gear, the chain-wheel or free-wheel clutch being omitted.