葡萄园和柑橘林星罗棋布的加州富饶农业区，似乎应该跟“美国空气污染最严重的地区”很难联系到一起。
1·The mosaic column emitter type drip irrigation pipe is widely used in water-saving irrigation fields , such as greenhouse, grapery planting, farmland planting, city greening and deserts greening etc.
内镶圆柱式滴头滴灌管广泛用于温室大棚、葡萄园种植、园林栽培、城市绿化、荒漠绿化等众多节水灌溉领域中。