unifilar
單線
U·ni·fi·lar a. Having only one thread; involving the use of only one thread, wire, fiber, or the like; as, unifilar suspension.
Unifilar magnetometer Physics, an instrument which consists of a magnetic bar suspended at its center of gravity by a long thread, constituting a delicate means for accurately measuring magnetic intensities, also for determining declinations of the magnetic needle.
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unifilar
adj : having or using only one filament