背板底板  backboard

垫板底板  bed piece

顶板底板控制  controlling of roof and bottom

舢板底板  foot waling; FOOTING; foot wales

舢板底板立足处  FOOTING

扇板底板  tegular plate

顶板-支护-底板系统  R-S-F system

PVC底板  PVC soleplate

安装底板  mounting shoe

鞍座底板断裂  fracture of saddle support mat

扒斗底板  scraper ground plate

白底板病  white abdominall shell disease; white abdominal shell disease

板底垫块  cushion block

板底垫托  Underplatin

板底滑道  Pole-slide with plank-bottom

板底脱空  hollow board; Void beneath Cement Concrete; Cavity beneath road slabs; Bursted bottom plate; slab suspending; void under slab; empty space beneath the slab; gapping under pavement slab; plat-bottom escape; void at the bottom of slab; Hole under Concrete Pavement; void beneath slab; cavity beneath slab; cavity of slab; void beneath concrete slab; void underneath pavement slab; slab hollow

板底脱空注浆  grouting treatment for void beneath slab

板底弯沉  deflection beneath old concrete slab

板底压浆  cement grout injected under slab