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

三从三个轴出来绕一，从而符合三并绕要求。

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.

当路中有二或三导平行排列时，磁场管状阱，原子可在其中自由移动。