数字式多路换向阀
digital multi-way directional valve
digital multi-way direction valve
小流量模型级
small flowrate model stage
小流量生活污水
small flow domestic wastewater
小流量数据传输
small amount data transmission
给水泵最小流量阀
minimum flow valve to the pump
手动流量阀门控制手柄
manual flow gate control handle
小流量紧闭麻醉
minimal-flow closed anesthesia