夜里疾风伴随
幼苗
共回答了12个问题采纳率：75% 举报
When starting watering, turn on the sprinkler's rotary valve fist, then turn on the water pump.
When stopping watering, turn off the pump first, and then close the sprinkler's rotary valve.
Running dry of the pump is strictly forbidden
1年前
4
