drainage ditch on slope_林学英汉词典
drainage ditch on slope
[林学英汉词典]
drainage ditch on slope山坡截流沟
是什么意思，drainage ditch on slope的解释，drainage ditch on slope的翻译
[水利科技英汉词典] drainage ditch on slope
山坡截流沟
drainage ditch on slope_林学英汉词典drainage ditch on slope
[林学英汉词典]
drainage ditch on slope是什么意思，drainage ditch on slope的解释，drainage ditch on slope的翻译
[水利科技英汉词典] drainage ditch on slope
