soft belt ball valve 软带球阀
flow current stabilizer 稳流器
snap fastener bypass valve 按扣旁通阀
flow adjusable drop head流量可调滴头
adjusable drop head 可调滴头
adjustable drop head 流量可调滴头
drip arrows 滴箭
drip irrigation belt滴灌带
drip irrigation pipe滴灌管
ota drip irrigation 大田滴灌
压力补偿滴头-节水灌溉
