工作電路pull: vt. 1.拉,拖,牽,曳 (opp. push); 勒 ...up: adv. (superl. uppermost ) 1. ...circuit: n. 1.(某一范圍的)周邊一圈;巡回,周游;巡回路線[ ...active pull-up circuit: 有源負(fù)載電路passive pull up circuit: 被動上牽電路下載手機(jī)詞典可隨時隨地查詞查翻譯