Products included are bolts, screws, studs, U-bolts, preassembled screw and washer assemblies (sems), and products manufactured the same as sems except without washer.

产品包括：螺栓、螺钉、螺柱、U型螺栓、预装配的螺钉和垫片组件以及与预装配组件一样加工的无垫圈产品。

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The GNFs were self-assembled on a sol-gel-derived silicate network, which was preassembled on a polycrystalline Au electrode and used for electrocatalytic applications.

金纳米花是在由溶胶衍生的硅酸盐网状结构中自组装的，而这种用于电催化反应的网状结构是预先安装在多晶的金电极上的。

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The spheres have a diameter of 600mm and are mounted at various distances on the 900 x 900mm brushed aluminium panels, which were preassembled and mounted on site.

球体直径为600毫米，以不同的间距安装在900×900毫米的磨砂铝面板上，是预先安装的，然后固定在建筑现场。

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The middle school teacher considers the preassembled pie, which she bakes at home, a cheap treat.

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