Just like the precordial electrodes, aVR, aVL, and aVF - each detect any positive deflection coming towards them.

就像心前区的电极aVR、aVL和aVF，这几个电极分别探查指向它们的正电波。

Leads aVR, aVL, and aVF, or " augmented limb leads" , are UNIpolar.

aVR，aVL，和aVF导联，或“加压肢体导联”，是单极的。