materials rate材料率materialsn.原料；素材名词material的复数形式.materials returned report已退原材料报告materials control account材料控制帐户materials and electronics材料电子materials standardization材料标准化materials usage standards材料耗用标准materials received report入库原材料报告Materials and collaterals经络materials layer thickness料层厚度materials for bone repair骨修复材料materials and energy pool材料和能源供应源