monolithic track bed；solid bed；integrated ballast bed；monolithic concrete bed
driving anchor [= floating anchor
annual temperature difference between track bed slab and bed plate
Circulating fluidized bed wity low velocity fore postied branch bed
ebullated bed ebullating bed
ebullated bed reactor ebullating bed reactor
ebullating bed ebullated bed
ebullating bed reactor ebullated bed reactor
moving packed bed and fluid bed
3D anchor-cable support
adjustable fluke angle anchor