corposant英美n. 机翼翼端放电; 圣埃尔莫火球; 放电光球英英释义nounan electrical discharge accompanied by ionization of surrounding atmosphereSynonym:corona dischargecoronaSt. Elmo's fireSaint Elmo's fireSaint Elmo's lightSaint Ulmo's fireSaint Ulmo's lightelectric glow