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精密機械加工的工藝效果是：
The effect of precision machining is:
①零件(jian)的(de)幾何形狀和相互位(wei)置精度達到微米或角秒級;
(1) the accuracy of parts geometry and position is up to micron or sec.
②零件(jian)的界(jie)限或特征尺寸公差在微米以下(xia);
2. The tolerance of parts or dimensions is below microns.
③零(ling)件表(biao)面微(wei)觀不平度(du)(表(biao)面不平度(du)平均高度(du)差)小于0.1 微(wei)米;
(3) the surface roughness (the average height difference of surface roughness) is less than 0.1 microns.
④互配(pei)件能滿(man)足配(pei)合力的要求;
4. Mutual accessories can meet the requirements of combining ability.
⑤部(bu)分零件還能(neng)滿足準確(que)的(de)力學或其他物理特性要求;
Some parts can also meet the requirements of precise mechanics or other physical properties.