What does E&M stand for?

E&M stands for "ear and mouth (special signaling leads)"

How to abbreviate "ear and mouth (special signaling leads)"?

"ear and mouth (special signaling leads)" can be abbreviated as E&M

What is the meaning of E&M abbreviation?

The meaning of E&M abbreviation is "ear and mouth (special signaling leads)"

What does E&M mean?

E&M as abbreviation means "ear and mouth (special signaling leads)"