clock extraction circuit
layout circuit extraction
layout-circuit extraction
split-circuit extraction
alternation current circuit {= AC circuit}
earth circuit [= earth return circuit]
enlarged circuit and compensation circuit
single filip-flop circuit (sff circuit)
trip circuit and closing circuit
Extraction and back extraction
extraction and back-extraction
Extraction or Non-Extraction Plan
extraction-anti-extraction
Extraction-Back-Extraction
Oil Extraction Office of No.3 Oil Extraction Factory