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

2、Optimum Configuration of LP Heater Drainage System for 1000 MW Units
1000MW機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、花壇的構造、排水系統(tǒng)的類型以及排水系統(tǒng)的設計計算方法。

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
變頻調速技術在低壓加熱器疏水系統(tǒng)中的應用