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原物品存在的问题:杆秤是我们日常生活中经常使ff{的:I:具之一,它已经在z}1华大地上使用几千年r.似是它有一个小小的缺陷,就是一不小心秤砣会’顷着秤杆滑下米.甚至砸到人,很不安全: 新物品的结构和特点:如图.在秤杆的尾部做一个斜凹槽,这个小槽会随时将滑1:的秤砣钩住,使其不
The problem with the original item: The steelyard is one of the things that often makes ff{:I: in our daily life, it has been used for thousands of years on the land of z}1. It seems that it has a small defect. If you accidentally weigh, you’ll be off the meter with the balancer. It’s even unsafe to get to the person: The structure and features of the new item: as shown in the figure. Make an oblique groove at the end of the rod, this small groove will slide at any time. : The scale is hooked so that it does not