無支撐平封頭和蓋板flat: adj. (flatter; flattest) 1.平 ...head: n. 1.頭,頭部,首。 2.頭腦,才能;智力,想像力, ...cover: vt. 1.覆蓋,遮蔽,包裹;戴帽子;包庇,隱蔽,掩蓋; ...flat heads and covers, unstayed: 無支撐平封頭和蓋板flat unstayed circular head: 無支撐圓形平封頭下載手機(jī)詞典可隨時隨地查詞查翻譯