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The fourth class ammonium compound which shows the action of new style in regard to the protection of the wooden structure
The fourth class ammonium compound which shows the action of new style in regard to the protection of the wooden structure
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机译:第四类铵化合物,在保护木结构方面表现出新的作用
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摘要
This invention makes the fourth class ammonium compound this cellulose substrate contain directly or in regard to the cellulose substrate which contacts indirectly in the land.
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