aetiological agent

• 发病原因,病因

aetiological agent的用法和样例：

例句

1. The scrapie agent in sheep may be similar to viroids.
   绵羊的搔痒病因子可能也是类病毒。
2. Statistics on occupational mortality have been of greater value in these respects than in initiating the study of new aetiological agents.
   不同职业的死亡率的统计对这些方面的价值较之对于开展新的病因研究的价值更大。