resultant linear density

例句：

1. 1.The resultant linear density of the material is very high, which makes it difficult to process.
   材料的结果是线密度非常高，这使得加工变得非常困难。
2. 2. The engineer calculated the resultant linear density of the beam based on the given parameters.
   工程师根据给定的参数计算了光束的结果线密度。
3. 3.The resultant linear density of the material can be used to determine its mechanical properties.
   材料的结果是线密度可以用来确定其机械性质。