Their engineering arm, known as Ghorb, has been granted juicy slices of big state projects, including the building of gas pipelines and a new section of the Tehran metro.
他们控制的名为Ghorb的工程支臂也被授予了一些报酬颇丰的大型国家工程，其中包括了天然气管道的建设与一个新的德黑兰地下铁道的建设。
This paper introduces the structural design, raw mater ial selection, manufacturing process, property test and quality control method for contact rail protective cover board for Tehran Metro project.
本文介绍了地铁接触轨防护罩的结构设计、原材料选择、制造工艺、性能检测、质量控制等。
This paper introduces the structural design, raw mater ial selection, manufacturing process, property test and quality control method for contact rail protective cover board for Tehran Metro project.
本文介绍了地铁接触轨防护罩的结构设计、原材料选择、制造工艺、性能检测、质量控制等。
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