Pulley is a machine used to lift objects up high or lower them down. A pulley has a rotating wheel that rotates smoothly around its body and has a rope running over the wheel for lifting object

Pulley is a machine used to lift objects up high or lower them down. A pulley has a rotating wheel that rotates smoothly around its body and has a rope running over the wheel for lifting object图片
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Pulley is a machine used to lift objects up high or lower them down. A pulley has a rotating wheel that rotates smoothly around its body and has a rope running over the wheel for lifting object
  • 素材ID：1407699557
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  • 格式：JPG
  • 作者：AREE
  • 最大分辨率：6240 x 4160px
  • 最大输出：52.83 x 35.22cm (300dpi) | 220.13 x 146.76cm (72dpi)
关键词
电源工作机器能源重型马萨强度机械动态重力机械系统旋转努力机制卷轴移动实验工业机械师工程重量滑轮化合物动力学动议压路机力荷载物理车轮挂钩教育拉吊装工具移动绳索动量科学

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