For small diameter pipeline it is more difficult than for large diameter pipeline.

对于小管径管道，其通球难度要大于大管径管道。

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Particularly, the drying technique of using dry air for large diameter pipeline was applied for the first time in our country.

尤其干空气干燥技术，开创了我国大口径输气管道干燥施工的先例。

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But the pipeline thrust of large diameter is usually very big. The design form of anchors will influence the fabrication cost of the project and safe operation directly.

但是大直径管道推力通常很大，固定墩的设计形式，将直接影响到工程造价和安全运行。

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These include long-term energy security, the viability of shipping large volumes of oil through the Bosporus, and the attractiveness of a large-diameter pipeline to a port like Ceyhan, which is able to handle exports from both sides of the Caspian.

ECONOMIST: No apology necessary