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N.w.是英文net weight的缩写，翻译成中文上净重。是指商品本身的重量，即除去包装物后的商品实际重量。 g.w.是英文 gross weight 的缩写，翻译成中文上毛重。是指货物连同它的包装的. 用于描述物质属性的两种物理量。两者之间有时会混淆。 *牛顿 (newton)将物体的质量定义为物体所受外力和由此获得的. Weight n.a body's relative mass or the quantity of matter contained by it,giving rise to a downward fore;the heaviness of a person or thing.