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一个螺絲是个很小的东西,但从小处着手也可以給国家节約很多財富。我們改进的盖板螺絲就是个例証。浮选机盖板要用螺絲和机身連接。常用的方法有两种:埋头螺絲法(如图1)和对絲法(图2)。
A screw is a small thing, but starting small also can save a lot of wealth for the country. Our improved cover screws are an example. Flotation machine cover with screws and body connection. There are two commonly used methods: countersunk screw method (Figure 1) and pairs of wire method (Figure 2).