mechanical friction loss

例句：

1. 1. The machine's efficiency is directly related to the amount of mechanical friction loss.
   机器的效率与机械摩擦损失直接相关。
2. 2.The engineer calculated the mechanical friction loss for the new design.
   工程师为新设计计算了机械摩擦损失。
3. 3. The study found that reducing mechanical friction loss could significantly improve the machine's performance.
   研究发现，减少机械摩擦损失可以显著提高机器的性能。