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 second phase was the assembly, alignment and moorings of the containers to the concrete platforms with a mechanical crane.

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为验证本文研究的塔式起重机计算机辅助设计平台的正确性，对某厂生产的5012塔机的塔身进行了再设计。

For verifying accuracy of the investigative platform, we designed the tower crane mast again about the type of 5012.

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根据《特种设备目录》，随车起重机属于起重机械中流动式起重机类，代码为4490，而液压升降平台车则属于起重机械中的升降机类，代码为4890。

According to the "special equipment directory", lorry crane which belongs to a hoisting machine in mobile crane, code 4490, and the hydraulic lifting platform vehicle is in crane lift type, code 4890.

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