back up ring
常见例句
- Ring up when you get back from your holidays.
你度假回来后请打个电话 来。 - When the O-ring has relaxed to grasp the shoulder protection, the bonnet assembly may be assembled into the body with the O-ring clinging to the back-up washer.
当放松O形环使其恢复原状,此时O形环就抓紧肩部保护,带着粘附着后部垫圈的O形环,阀帽组件可以组装进阀体内。 - With the improvement of living and the strengthening of consumers self-realization, more and more self-symbol-product, such as CRBT(Color Ring Back Tone), well up in market.
生产力的提高、人们自我意识的加强,促使越来越多类似彩铃的自我符号性商品涌向市场。 - Sometime between the engagement and the Christmas holidays they broke up, but got back together again just in time to ring in the New Year.
FORBES: Words Can Lead to Murder 返回 back up ring