环氧彩砂石英石
colored quartz epoxy floor
石英粒度标型
quartz grain-size (typomorphism
quartz grain-size typomorphism
砂粒粒度分布
sand-grain-size distribution
Ⅵ级以上石英砂岩
quartz sandstones over Ⅵ classes
GAC-石英砂双层滤池
granular active carbon-sand filter
长石石英岩
Arkose
arkosic sandstone
arkose-quartzite
arkosite (arkose-quartzite
arkosite
充填砾石与地层砂粒度中值比
median pack-to-formaton grainsize ratio
地层砂与砾石粒度比
formation-to-gravel size ratio