器官发生的发展
organogenetic development
尚未完成的成本估算
Estimated Cost to Complete (“ECC
扁桃花粉的发生及发育
Development of Almond Pollen
草地螟的发生与防治
The Happening and Cure of Beet Webworm
大蒜锈病的发生和防治
The Damage and Control of Garlic Rust
电压变化的发生率
rate of occurrence of voltage changes