pebblen.鹅卵石n.水晶；水晶透镜v.用卵石铺；用卵石投掷；使有卵石纹pebble-oil ratio卵石-油比pebble-bed shield砾石层屏蔽pebble fuel element煤球形燃料元件,卵石形燃料元件pebble-bed reactor球形燃料反应堆pebble cobble desert砾碎石沙漠pebble-dash plaster卵石抹面pebble bed regenerator卵石床蓄热器pebble-bed clarifier卵石床沉淀池pebble glass lamp shade砾石玻璃灯罩Pebble bed modular reactor模块式球床反应堆