coarse silt

基本解释

These may range from coarse silt to sand or pebble size.
这些颗粒的大小变化范围，从粗粉砂级到砂级或细砂级。
dict.cn
Although silt is prevalent in tidal-flat deposits, it is coarse and fine tails that change sharply in their percentages after sedimentary dynamic variations.
潮坪沉积物以粉砂为主，但敏感地反映沉积动力变化的却是粗、细尾部分。
Hydraulic hoist of solid coarse particles in the vertical pipe is used in oil extraction, chemical engineering, ocean mining, coal mining and silt cleanup and so on.
固体粗颗粒物料的垂直管水力提升常见于石油开采、化工反应、深海采矿、水力采煤、河湖清淤等工程场合。