长藤结瓜式灌溉系统

长藤结瓜式灌溉系统，长藤结瓜式灌溉系统,changtengjieguashi guangai xitong，系统,灌溉,长藤结瓜式,xitong,guangai,changtengjieguashi，[拼音]：changtengjieguashi guangai xitong[外文]：canals joining reservoirs t...