baffled gravel-placement device  装有隔板的砾石充填装置

compacted gravel placement  密实砾石充填

gravel placement  砾石充填

tight gravel placement  致密砾石充填

gravel-pack gravel  砾石充填用的砾石

additional gravel  砾石附加量

after pump gravel injection system  泵后加砂注入系统

alluvial gravel bed  河流相砾岩

antiscour gravel  防冲刷砾石

artificial gravel  蒸发光散射检测; 人工碎石加工

as dug gravel  原状砾石

asphalt gravel mixture  沥青碎石混合料

asphalt stabilized gravel base  沥青稳定碎石基层

assorted sand and gravel  筛选的砂和砾石

band-run gravel  河岸砾石

bank gravel  提岸砾石; 采石坑砾石; 河岸砾石; 河卵石

bank run gravel  岸涟砾; 采石坑砾石

bar gravel  砂洲砾石; 河流砾石浅滩; 浅滩砾石

beach gravel  海岸砾石; 海滨砾石; 海滩砾石; 聚(DL丙交酯); 聚DL-丙交酯

bench gravel  棚地砾石; 阶地砾石