1、The drainage system has been aged.
排水系統(tǒng)已經(jīng)老化了。

2、Optimum Configuration of LP Heater Drainage System for 1000 MW Units
1000MW機(jī)組低壓加熱器疏水系統(tǒng)的優(yōu)化配置

3、Design for the Drainage System of Addis Ababa Ring-road Project
亞的斯亞貝巴市環(huán)城道路排水系統(tǒng)設(shè)計

4、This area was very marshy before the drainage system was installed.
在疏竣工程安置前，這區(qū)域是象濕地樣的。

5、Also the design and calculation of their water drainage system are added.
介紹綠地、花壇的構(gòu)造、排水系統(tǒng)的類型以及排水系統(tǒng)的設(shè)計計算方法。

6、If no drainage system exists, the water table rises, bringing dissolved salts to the surface.
如果沒有排水系統(tǒng)，地下水位就會上升，把溶解的鹽帶到地表。

7、Frequency control technique applied to drainage system of LP heaters
變頻調(diào)速技術(shù)在低壓加熱器疏水系統(tǒng)中的應(yīng)用