地下发射井的英文

• launch silo
• launcher silo
• launching silo
• underground projector tube
• underground silo

• 地下:    on the ground
• 发射:    launch; radiate; project; di ...
• 井:    well
• 导弹地下发射井:    missile silo
• 防原子地下发射井:    hardened silo