“研磨”造句
此硬度计的依据是矿物的相对
研磨能力.
This scale is based on the relative abrasiveness of minerals.
铬镀后常常是通过磨削及
研磨来达到尺寸.
Frequently chromium deposits are ground or lapped to size.
陶瓷元件是将仔细
研磨的材料经过加压和烧结制成.
Ceramic elements are made by pressing and sintering finely powdered material s.