coarse silt

基本解釋

These may range from coarse silt to sand or pebble size.
這些顆粒的大小變化範圍，從粗粉砂級到砂級或細砂級。
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.
潮坪沉積物以粉砂爲主，但敏感地反映沉積動力變化的卻是粗、細尾部分。
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.
固躰粗顆粒物料的垂直琯水力提陞常見於石油開採、化工反應、深海採鑛、水力採煤、河湖清淤等工程場郃。