| gravel |
Granular material resulting from abrasion and natural disintegration of rock that is predominately held on the #4 (4.76 mm) sieve.
Ãâó: www.constructionwork.com/resources_details_1391agg...
|
|---|---|
| gravel |
is from 2 mm to 64 mm
Ãâó: www.aglearn.net/isfmMod2.html
|
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|
Á¦Ç°¸í |
ÆÇ¸Å»ç |
º¸ÇèÄÚµå | ¼ººÐ/ÇÔ·® | ±¸ºÐ/º¸Çè±Þ¿© |
|---|