The main focus of this manual is the management of fresh ground water resources . 本指南的主要中心是地下淡水资源的管理。
2.
Special water supply pump for the field corps and courtyard flower and grass . it can freely supply the fresh ground water . it s easy to manage 田地庄稼和庭院花草专用供水泵,随时可供新鲜的地下水,管理非常方便。