ความคิดเห็นที่ 22
an alluvial fan - ไม่ใช่ชื่อแม่น้ำ แต่เป็นปรากฏการณ์ธรรมชาติอย่างหนึ่ง
Alluvial fans are fan-shaped deposits of water-transported material (alluvium). They typically form at the base of topographic features where there is a marked break in slope. Consequently, alluvial fans tend to be coarse-grained, especially at their mouths. At their edges, however, they can be relatively fine-grained. ...
alluvial fan - A fan-shaped accumulation of alluvium deposited at the mouth of a ravine or at the juncture of a tributary stream with the main stream.
จากคุณ :
Mochica
- [
9 ก.ค. 51 22:53:45
]
|
|
|