Reservoirs collect river water and pipe it to thirsty cities and parched fields. Rivers that once carried our ancestors' canoes now carry huge ships.
水库储蓄河水,然后,被送到缺水的城市和干渴的田野。我们祖先的独木舟曾经航行过的河流,现在浮载着我们的巨轮。
This paper presents the positioning technology of guiding pipe of pulling cable for main towers of Chongqing Lidu Yangtze River Bridge.
介绍重庆李渡长江大桥主塔斜拉索的套管定位测量技术及施工过程中减少测量误差的措施等。
This final operation is the"pullback"and installs the line pipe under the river.
这最后的操作叫“拖管”,它使管道就位于河床下面。
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