monolithic track bed；solid bed；integrated ballast bed；monolithic concrete bed
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
bowsprit
船首第一斜桅船首斜桁
船首第一斜桅
相位变化率
艏斜桅
船首斜桁