1. Yiyọ ipata Afowoyi: Lilo awọn irinṣẹ afọwọṣe gẹgẹbi iwe irin, scraper, spatula, ati fẹlẹ waya.Ọna yii jẹ kikankikan iṣẹ giga, ṣiṣe iṣelọpọ kekere, ṣugbọn iṣẹ ti o rọrun ati irọrun, tun gba.2. Mechanical ipata yiyọ: Lilo awọn ikolu ati edekoyede ti darí agbara lati r & hellip;
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