filling density

例句：

1. 1.The filling density of the product is crucial for its performance.
   产品的填充密度对其性能至关重要。
2. 2. The density of the filling affects the overall weight and size of the product.
   填充物的密度会影响产品的整体重量和尺寸。
3. 3. The density of the filling is measured to ensure it meets industry standards.
   填充物的密度被测量以确保它符合行业标准。