Tree number

• 株数

Tree number的用法和样例：

例句

1. Mortality is the number or volume of trees periodically rendered unusable through natural causes.
   枯损是一类由于自然原因而定期变得无用的林木株数或材积。
2. Virus spread within a field depends on the number of virus sources, the number of healthy plants.
   田内病毒传播依据病毒源数目，健株数。