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设置图标的起重机,电梯,绞车和钩子——人造物体对象Set Icons of Crane, Lifts, Winches and Hooks - Man-made objects Objects黑色、建筑、商业、建筑、起重机、履带,吊杆,设计师,工程、设备、龙门,沉重,起重机,钩,图标,说明,工业、工业、孤的,升力,机械,集,符号,剪影,象征,科技,塔,卡车,白色,绞车 black, building, business, construction, crane, crawler, derrick, des