英语词汇retraction ring怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	retraction ring
释义	retraction ring 美/ r??tr?k?n r?? / 简明释义收缩环，子宫收缩环双语例句 1 A mechanical component with two rings pivoted on axes at right angles to each other allowing movement in two directions used in the flap extension and retraction system. 襟翼的伸出和收上系统内的具有两个圆环的机械部件。两个圆环的旋转轴相互垂直，以使部件在两个方向都能转动。
随便看	color picker color pickup color pick up tube color pick-up tube color pickup tube color picture color picture converter color-picture rate color picture screen color picture signal color picture tube color-picture tube color picture tube of 110 color pigment color plane color planning color plasma color plate colorplate color plate making colorplate colorplexer color plexer color plotter colorplus

英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。