acrossing-zero detection

cross-zero detection

nonreturn-to-zero operation

zero-detection

zero-detection circuit

zero-zero

zero-zero escape system

zero-zero gel

zero-zero gelZ

zero-zero seat

zero-zero transition

ZZ-TOP Zero – Zero Telecoms Operating Protocol

camera operation detection

operation detection

genetic operation operation function

nonreturn-to-zero change-on-zero recording

return zero problem around zero-frequency

Zero Voltage and Zero Current Switching

zero voltage switching or zero current switching