...绕中心轴转动的轮叫滑轮; (二)、定滑轮 〖活动2〗:演示:定滑轮提物体,归纳定滑轮的概念 知识点 2:定滑轮(fixed pulley):滑轮使用时, 的滑 轮叫定滑轮; 〖活动3〗:探究使用定滑轮的特点: ⑴装配定滑轮,竖直向下拉弹簧秤,使钩码保持平衡状态,读...
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The EOD Rope hook set is composed of hook, rope, fixed pulley, adjustable lever, clamp, multi-function clip and disk.
排爆绳钩组是由钩、绳、定滑轮、可调节杆、卡紧器、多功能工作夹、吸盘等多种器材组成。
The fixed pulley is rotated by a cranking bar to wind the steel cable, a spare tire can be lifted, and the spare tire can be put down stably by rotating in reversal the cranking bar.
使用摇把转动定滑轮圈绕钢丝索,即可提升备胎,反转摇把即可平稳降下备胎。
The tower type belt driven long stroke pumping unit is composed of the crank-linkage-slide mechanism, movable pulley-narrow belt-fixed pulley mechanism and compound drum stroke-increment mechanism.
无游梁塔架式胶带传动长冲程抽油机由曲柄-连杆-滑块机构、动滑轮-窄胶带-定滑轮机构和复合滚筒增程机构组成。
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