3.1.9.4.8喷射完毕，应用压缩空气吹净表面的灰尘。的翻译：3.1.9.4.8 Jet completed compressed air blasting dust on the surface of the application. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

3.1.9.4.8 injection is completed, the application of compressed air blowing dust from the surface.

3.1.9.4.8 Jet completed compressed air blasting dust on the surface of the application.

3.1.9.4 .8 spraying finished, blows only the superficial dust using the compressed air.

3.1.9.4.8 Jet completed compressed air blasting dust on the surface of the application.