短語(yǔ)詞組短語(yǔ)Crossing Off A Concern 刪去一個(gè)問(wèn)題crossing detection is off 隧道檢測(cè)是關(guān)閉;穿越檢測(cè)已關(guān)閉;交叉檢測(cè)是關(guān)閉digit -crossing off test 劃字測(cè)試zero crossing time pick -off 零點(diǎn)交叉時(shí)間選域zero -crossing current switching-on-off 零電流投切 返回 crossing off