three-wire

The three wires were fed from the three spools and wound as one wire; thus comprising the trifilar terminology.

三条从三个轴出来绕成一条，从而符合三并绕的要求。

When the circuitry takes the form of two or three wires running in parallel, the magnetic field forms a tubelike trap along which the atoms can move freely.

路中有二或三条导平行列时，磁场会形成管状阱，在其中自由移动。