山坡截流沟
- 网络intercepting ditch on sloping land; drainage ditch on slope
山坡截流沟山坡截流沟
intercepting ditch on sloping land
slope... ... instable slope 不稳定边坡 intercepting ditch on sloping land 山坡截流沟 intermediate slope angle 中间边坡角 ...
drainage ditch on slope
drainage... ... farm drainage ditch ： 排水毛沟 drainage ditch on slope ： 山坡截流沟 trunk drainage ditch ： 排水干沟 ...