factory engine car line lineart work auto force assembling workforce workers production manufacturer work-force Assembling The Engine clip art 組立 エンジン 工場 労働力の労働者の生産メーカー労働力の組み立て工場エンジン車ライン ラインアート作業自動力
This simple conveyor is created by only two strokes (but not many strokes as it appears), this is achieved by having two widen strokes with dotted line style, which allows the simplest and easiest maintenance yet ensuring smallest possible footprint. Further enhancement can be made based on similar concept. 業界 コンベア ベルト コンベア