Its bark is an important raw material for picture paper production and pocesses high economic value.
树皮是生产宣纸的重要原料，经济价值高；
Smooth twisting belt made of plastics is simple in structure and pocesses the double functions of self-cleaning and heat transfer , but heat transfer is not large enough.
塑料光滑扭带具有自动清洗和传热强化的双重功能，结构又很简单，但传热强化功能不强。
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