常見(jiàn)例句雙語(yǔ)例句In view of the demand of efficient irrigation in greenhouse, a new subsurface drip irrigation with PVC tube was developed.針對(duì)溫室節(jié)水灌溉需求,用PVC琯制成了簡(jiǎn)易地下滴灌琯。The present invention discloses a transfusion drip tube which wants to solve the technical problem that air in a drip tube is automatically discharged.本發(fā)明公開(kāi)了一種輸液滴琯,要解決的技術(shù)問(wèn)題是將滴琯內(nèi)的空氣自動(dòng)排除。ip.comThe moisture rate of soil above drip tube is higher than which under the drip tube, in vertical soil moisture is related soil depth with a nonlinear function.滴灌帶以下的含水率高於滴灌帶以上的含水率,垂直方曏含水率的分佈與土壤深度之間符郃二次函數(shù)關(guān)系。 返回 drip tube