wood surface短语¹⁴⁴⁹⁷²⁺² 基本例句 🌏木材表面 This article deals with the mechanical properties of wood powder polypropylene composite panels and the morphology of the esterification of the wood surface while varying the level of wood content. 研究了聚丙烯与木粉以不同比率复合而成的材料的物理力学性能和复合形态特征。 chemyq