The particle restriction of the Semi-fixed abrasive plate is between free completely and fixed completely.
而在游离磨粒加工中，磨粒是完全自由的，处于无约束状态。
Using high pressure water jet impact on the role (in addition to the role of abrasive grinding) and the prized role of water damage and corrosion coating on the shelves of the adhesion plate.
利用高压水射流的冲击作用(加上磨料的磨削作用)和水撬作用破坏锈蚀和涂层对货架钢板的附着力。
Mechanical graining: Mechanically roughening the surface of a metal sheet by means of abrasive powders, sand bursting, etc, for use as an offset plate.
机械磨版：用磨擦粉剂，喷沙等机械方法把金属片的表面造成粗糙，适合为柯式印刷。
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