The invention has simple structure, ingenious shape, economic material selection, simple production and wide application.
本发明结构简单，造型精巧，选材经济，制作简便，应用广泛。
The invention has simple structure, ingenious shape, economic material selection, simple production and wide application.
本发明结构简单，造型精巧，选材经济，制作简便，应用广泛。
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