factory engine car line lineart work auto force assembling workforce workers production manufacturer work-force Assembling The Engine clip art 裝配 引擎 工廠 組裝工作力工人生產製造商工作力量的廠發動機車線藝術線條工作汽車力量
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. 行業 輸送機 皮帶 輸送機