The Pandaoling tunnel is the longest non-pressure diversion tunnel of the main channel from Datong river to water irrigation project at Qinwangchuan region.
盘道岭隧洞是引大入秦灌溉工程总干渠上最长的无压引水隧洞。
2
Based on traditional experience, tunnel permeating irrigation for dryland wheat has been designed.
根据传统隧道式灌溉经验，设计了旱地小麦隧洞渗(洇)灌技术。
3
A tunnel was dug through the mountain to bring water from the river for irrigation.