卵砾石层取心
core recovery from pebble-bearing and gravel-bearing rock formations
卵砾石地层
gravel stratum
cobble stratum
gravel strata
gravel and cobble stratum
Gravel
中粗砂含砾卵石潜水含水层
submerged water-bearing formation with middle-sized coarse sand and cobblestone
大比降卵砾石河流
the high gradient gravel river
卵砾石床面
acoustic doppler velocimeter
卵砾石土路堑边坡
slope of gravel earth depressed road
漂、卵石层
floating rock and screed stratum