Patterns have films, belt , ring , ring wire, rod, particle, powder and so on.
形态有片、带、环、圈丝、棒材、颗粒、粉末等。
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On back of board, nail in ring hangers and tie on hanging wire.
木板背后钉入三角环悬挂架，用不锈钢吊索固定。
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