The practice of operation for several years has proved that the design and construction of the second phase concrete batching system are successful.
经过几年的运行实践表明，三峡二期混凝土拌和系统设计、建设是成功的。
The second phase was the assembly, alignment and moorings of the containers to the concrete platforms with a mechanical crane.
第二阶段是组装、校准和用一个机械起重机来将集装箱提升至混凝土平台。
The concrete impervious wall for the second phase cofferdam in the Three Gorges Project is the key to the cofferdam.
三峡工程二期围堰混凝土防渗墙是围堰工程成败的关键。
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