back-up ring

基本解釋

The Tee Seal uses two Nylon Back-Up Rings as anti-extrusion devices, allowing the Tee Seal to function under much higher pressures than a standard O-Ring.
在發(fā)球密封采用兩個(gè)尼龍備份，作為抗擠壓設(shè)備的戒指，讓T恤印高得多的壓力下功能比標(biāo)準(zhǔn)O形圈。
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.
當(dāng)放松O形環(huán)使其恢復(fù)原狀，此時(shí)O形環(huán)就抓緊肩部保護(hù)，帶著粘附著后部墊圈的O形環(huán)，閥帽組件可以組裝進(jìn)閥體內(nèi)。
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.
生產(chǎn)力的提高、人們自我意識(shí)的加強(qiáng)，促使越來(lái)越多類似彩鈴的自我符號(hào)性商品涌向市場(chǎng)。