spark plug火花塞火花插頭學術名詞火星塞：機械工程、物理化學儀器設備、物理學、航空太空、電子工程、陶瓷材料火花塞：物理化學儀器設備、電機工程、電力工程火花插頭：電機工程、電力工程英文釋義electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark