The two kinds of materials are connected together by macro-molecular nylon pieces, which eliminate the problem of the coefficient difference of shrinkage of wood and metal.
两种材料通过高分子尼龙件连接，解决了木材和金属收缩系数不同的问题。
The two kinds of materials are connected together by macro-molecular nylon pieces, which eliminate the problem of the coefficient difference of shrinkage of wood and metal.
两种材料通过高分子尼龙件连接，解决了木材和金属收缩系数不同的问题。
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