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1·The city planner decided to build an underground drainage system.

城市规划师决定建一个地下排水系统。

2·If no drainage system exists, the water table rises, bringing dissolved salts to the surface.

如果没有排水系统，地下水位就会上升，把溶解的盐带到地表。

3·The drainage system has been aged.

排水系统已经老化了。

4·The drainage system has been aged .

排水系统已经老化了。

5·So can implement the whole autocontrol of drainage system.

从而实现对排水系统的全自动控制。

6·A drainage system of high-pressure compressor is introduced.

介绍了一种高压空压机排污系统。

7·This area was very marshy before the drainage system was installed.

在疏竣工程安置前，这区域是象湿地样的。

8·In the urban planning, the design of the drainage system is essential.

在城市规划中，排水系统的设计至关重要。

9·Also the design and calculation of their water drainage system are added.

介绍绿地、花坛的构造、排水系统的类型以及排水系统的设计计算方法。

10·Workmen put in a proper drainage system and supplied pure drinking water.

工人安装了合适的排水装置，提供纯净的饮用水。 收藏。

水系

1·All of these indicate that in the arid desert area the drainage system sediment survey, as a rapid reconnaissance for a big area, is the one of more effective methods for uranium prospecting.

从而说明，在干旱荒漠地区进行水系沉积物测量，快速扫面，是普查找矿远景行之有效的方法之一。

2·If scientific means rather than the human eye is used, then one will find that even in the rock formation in a desert, there is also a tiny but complicated drainage system.

不用常人眼睛而用科学手段，就会发现即使在沙漠岩层中，也有一个微小而复杂的水系。