| 1. | The sand is separated from the silt and clay by wave sorting .
砂粒在波浪分选作用下从粉砂及粘土中分出。 |
| 2. | 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。 |
| 3. | These particles range from coarse silt to sand or pebble size .
这些颗粒的大小变化范围是从粗粉砂级到砂级或细砂级。 |
| 4. | This sandstone unit is commonly thick-bedded and massive, with silty and carbonaceous laminations .
该砂层单元通常为厚层或块状，具粉砂质和碳质纹层。 |
| 5. | Stochastic analysis of sudden siltation of silty sand in open channels
开敞式航道粉砂骤淤的随机分析 |
| 6. | Study on well completion techniques and capacity of screen like qiao type in silt strata
粉砂地层桥式滤水管的成井工艺与出水量研究 |
| 7. | Salt dynamics in soil profiles under condition of different groundwater depths and salinities
地下水作用条件下粉砂壤土盐分动态研究 |
| 8. | So it has the merits of lower price , liable quality , no slurry pollution , penetrating easily the silty and silty - sand layers , efficient construction etc
具有工程造价低，质量易于保证，无泥浆污染，能穿过粉土、粉砂层，施工速度快的优点。 |
| 9. | The intercalations are divided into five types , such as muddy intercalation , silty intercalation , calcareous intercalation , marly intercalation , and gravel intercalation
夹层类型主要有泥岩夹层、粉砂质泥岩夹层、灰质夹层、泥灰质夹层和砾石质夹层5种。 |
| 10. | Ore type primarily contains the copper sand scraps slilica rock or contain the copper gravel scraps silica rock , a little amount powder sand sericite callys type copper silver mine and dolomie type copper silver mine
矿石类型主要有含铜砂屑硅质岩或含铜砾屑硅质岩刑，少量粉砂质绢云母板岩型铜银矿石及白云岩型铜银矿石。 |
