经磨 meaning in English

wearable

Because i know : gems cannot shine without polish , and i cannot perfect myself without hardship
因为我知道，宝玉不经磨大砺就不能发光，没有磨练，我也不能完善自我。
To make the gluing more stable and firm and glued after worked by the edgegrinding machine . with the advantages of high effect , operating by several persons and wife application
经磨边机构工作后使上胶更稳定、粘口牢固、不脱胶。具有功效高、多人同时操作，使用范围广等优点。
Large diameter roller drum ( 800 ) made with superior quality stainless steel , the surface is treated either with grinding or milling so that the wear and tear of the fabrics is reduced to the minimum
大直径辊筒（ 800 ）采用优质不锈钢制造，表面经磨加工处理，使织物的磨损降低到了最低限度。