LE SOL ENGAZONNE POUR TERRAINS DE SPORTS
- 专利权人:
- NORMANDIE DRAINAGE
- 发明人:
- LETELLIER MARCEL
- 申请号：
- FR19990006383
- 公开号：
- FR2793819(B3)
- 申请日:
- 1999.05.19
- 申请国别(地区):
- 法国
- 年份:
- 2001
- 代理人:
- 摘要：
- The soil is made of a) a lower layer of filtering materials such as plastic or rubber waste b) an intermediate layer of clinker c) a superior layer of mixed fine sand and grind fabric. Organic matter may then be added to further the grass raising.
- 来源网站：
- 中国工程科技知识中心
