adjustable ring shank 可调节的戒环

Adjustable ring skills 调圈台技巧

adjustable ring type nozzle 可调环形喷嘴

adjustable split ring hanger 可调拼环式管吊

adjustable range ring 距离调节环

adjustable lapping ring 可调精研圈

adjustable weir ring 溢流堰调节环

adjustable half ring leg splint 释义可调式半环形腿夹板

adjustable e ring 调节环