短語詞組短語sparkover voltage 飛弧電壓;火花電壓英語sparkover test 飛火花試騐impulse sparkover 脈沖閃絡(luò)voltage sparkover 飛火花電壓cathode sparkover 負(fù)極跳火test sparkover 火花試騐sparkover characteristics 放電特性let -through sparkover 允通火花放電wet sparkover voltage [電]溼放電電壓 返回 sparkover