7.An ancient unit of linearmeasure, originally equal to the length of the forearm from the tip of the middle finger to the elbow, or about17 to22 inches(43 to56 centimeters).
10.This paper introduces some ways based on the linear analog light-coupler to measure the voltage of single battery in the series-wound Vehicle NI-MH Battery, and designs a battery management hardware system and practical voltage measurement circuit.