大部分摄像机的上面都有一个小的螺丝孔用来把相机固定到一个三角架或者其他稳定的拍摄支架或结构上。
Most cameras have a small screw-hole somewhere on them that allows the camera to be mounted to a tripod or other steady filming stand or structure.
生产各种精密螺丝、特殊薄头螺丝、三角自攻螺丝、各种机械用螺丝及车件、冲压件等产品。
Production of precision screws, special thin-head screws, triangle self tapping screws, machine screws and all kinds of car parts, stamping parts and other products.
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