fishing mortality coefficient

例句：

1. 1. The fishing mortality coefficient is a crucial factor in determining the sustainability of fish populations.
   捕鱼死亡率系数是决定鱼类种群可持续性的关键因素。
2. 2. The fishing mortality coefficient has been declining due to improved fishing techniques and regulations.
   由于改进的捕鱼技术和法规，捕鱼死亡率系数一直在下降。
3. 3. The fishing mortality coefficient is used to estimate the number of fish that die during the fishing process.
   捕鱼死亡率系数用于估算在捕鱼过程中死亡的鱼的数量。