有时在施工程只需一台大吨位的塔机即可完成。
Sometimes can be completed in a tower crane construction large tonnage.
分析结果为大吨位铁路起重机底架的设计与改造提供了理论依据。
The thesis forms a theory base for the design and improvement of the carrier frame.
分析结果为大吨位铁路起重机底架的设计与改造提供了理论依据。
The thesis forms a theory base for the design and improvement of the carrier frame.
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