设置行矿业——人造物体对象的图标Set Line Icons of Mining - Man-made objects Objects爆炸、商业、洞穴、煤炭、能源、爆炸、工厂、燃料、黄金、锤子,头盔,图标,工业、工业、线、矿山、矿工,矿物,采矿、矿石,轮廓,选择,幻灯片,采石场,集,车站,象征,科技,电车,工作 blast, business, cave, coal, energy, explosion, factory, fuel, gold, hammer, helmet, icon, industr