bulk unit weight

例句：

1. 1. The shipment includes alarge number of bulk materials.
   这批货物包括了大量的散装材料。
2. 2. Bulk materials areoften cheaper than their packaged counterparts.
   散装材料通常比它们的包装产品便宜。
3. 3. The company's bulk unitweight is significantly higher than its competitors.
   该公司的散装单位重量显著高于竞争对手。