平封头flat: adj. (flatter; flattest) 1.平 ...head: n. 1.头,头部,首。 2.头脑,才能;智力,想像力, ...in flat heads: 在平板封头上flat heads and covers, unstayed: 无支撑平封头和盖板flat spots on formed heads: 成型封头上的平坦部分下载手机词典可随时随地查词查翻译