silos

1.Their missile silos are below ground.

他们的导弹发射井在地下。

2.the silos are hardened against air attack.

发射井被加固袭。

3.Plymesh aeration pads are used to fluidize and to optimize the flow rate of powdered and pulverized products in silos and in bunkers.

使用复合网通风垫后，地上式青槽中的粉末可实现流体化，流速达化。