lastingness

1. With lastingness of infection, the productive rate of reactive oxygen species decreased gradually, and photosynthesis also weakened.
   随着感染时间的不断延长，活性氧的产生速率逐渐降低，同时光合作用逐渐减弱。

noun

1. permanence by virtue of the power to resist stress or force
   1. they advertised the durability of their products

   Synonym:    durabilityenduringnessstrength