气刀辊涂机装置上有细孔喷出压缩空气代替刮刀吹掉过剩的涂料用来调节涂膜的厚度
There are fine holes on the air knife roller coater device that spray compressed air instead of a scraper to blow off the excess paint, which is used to adjust the thickness of the coating film
以上为机器翻译结果，长、整句建议使用 人工翻译 。